diff --git a/Cargo.lock b/Cargo.lock
index eead819..707c64f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2527,7 +2527,6 @@ dependencies = [
  "graphql_client 0.11.0",
  "hmac 0.12.1",
  "http 0.2.12",
- "image",
  "itertools",
  "juniper",
  "jwt 0.16.0",
@@ -2536,6 +2535,7 @@ dependencies = [
  "ldap3_proto",
  "lettre",
  "lldap_auth",
+ "lldap_domain",
  "lldap_validation",
  "log",
  "mockall",
@@ -2551,7 +2551,6 @@ dependencies = [
  "sea-orm",
  "secstr",
  "serde",
- "serde_bytes",
  "serde_json",
  "serial_test",
  "sha2 0.10.8",
@@ -2625,6 +2624,26 @@ dependencies = [
  "thiserror",
 ]
 
+[[package]]
+name = "lldap_domain"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "base64 0.21.7",
+ "bincode",
+ "chrono",
+ "derive_more 1.0.0",
+ "image",
+ "juniper",
+ "lldap_auth",
+ "pretty_assertions",
+ "sea-orm",
+ "serde",
+ "serde_bytes",
+ "strum",
+ "uuid 1.11.0",
+]
+
 [[package]]
 name = "lldap_migration_tool"
 version = "0.4.2"
diff --git a/Cargo.toml b/Cargo.toml
index 936ba54..e3228ca 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,10 +1,11 @@
 [workspace]
 members = [
-  "server",
-  "auth",
-  "app",
-  "migration-tool",
-  "set-password",
+    "crates/domain",
+    "server",
+    "auth",
+    "app",
+    "migration-tool",
+    "set-password",
 ]
 
 default-members = ["server"]
diff --git a/crates/domain/Cargo.toml b/crates/domain/Cargo.toml
new file mode 100644
index 0000000..357eecf
--- /dev/null
+++ b/crates/domain/Cargo.toml
@@ -0,0 +1,59 @@
+[package]
+authors = [
+    "Valentin Tolmer <valentin@tolmer.fr>",
+    "Simon Broeng Jensen <sbj@cwconsult.dk>",
+]
+name = "lldap_domain"
+version = "0.1.0"
+edition = "2021"
+
+[features]
+test = []
+
+[dependencies]
+anyhow = "*"
+base64 = "0.21"
+bincode = "1.3"
+juniper = "0.15"
+serde = "*"
+serde_bytes = "0.11"
+
+[dev-dependencies]
+pretty_assertions = "1"
+
+[dependencies.chrono]
+features = ["serde"]
+version = "*"
+
+[dependencies.derive_more]
+features = ["debug", "display", "from", "from_str"]
+default-features = false
+version = "1"
+
+[dependencies.image]
+features = ["jpeg"]
+default-features = false
+version = "0.24"
+
+[dependencies.lldap_auth]
+path = "../../auth"
+features = ["opaque_server", "opaque_client", "sea_orm"]
+
+[dependencies.sea-orm]
+version = "0.12"
+default-features = false
+features = [
+    "macros",
+    "with-chrono",
+    "with-uuid",
+    "sqlx-all",
+    "runtime-actix-rustls",
+]
+
+[dependencies.strum]
+features = ["derive"]
+version = "0.25"
+
+[dependencies.uuid]
+features = ["v1", "v3"]
+version = "1"
diff --git a/crates/domain/src/lib.rs b/crates/domain/src/lib.rs
new file mode 100644
index 0000000..4abd0d4
--- /dev/null
+++ b/crates/domain/src/lib.rs
@@ -0,0 +1,3 @@
+pub mod requests;
+pub mod schema;
+pub mod types;
diff --git a/crates/domain/src/requests.rs b/crates/domain/src/requests.rs
new file mode 100644
index 0000000..eefd6e7
--- /dev/null
+++ b/crates/domain/src/requests.rs
@@ -0,0 +1,53 @@
+use serde::{Deserialize, Serialize};
+
+use crate::types::{
+    AttributeName, AttributeType, AttributeValue, Email, GroupId, GroupName, JpegPhoto, UserId,
+};
+
+#[derive(PartialEq, Eq, Debug, Serialize, Deserialize, Clone, Default)]
+pub struct CreateUserRequest {
+    // Same fields as User, but no creation_date, and with password.
+    pub user_id: UserId,
+    pub email: Email,
+    pub display_name: Option<String>,
+    pub first_name: Option<String>,
+    pub last_name: Option<String>,
+    pub avatar: Option<JpegPhoto>,
+    pub attributes: Vec<AttributeValue>,
+}
+
+#[derive(PartialEq, Eq, Debug, Serialize, Deserialize, Clone, Default)]
+pub struct UpdateUserRequest {
+    // Same fields as CreateUserRequest, but no with an extra layer of Option.
+    pub user_id: UserId,
+    pub email: Option<Email>,
+    pub display_name: Option<String>,
+    pub first_name: Option<String>,
+    pub last_name: Option<String>,
+    pub avatar: Option<JpegPhoto>,
+    pub delete_attributes: Vec<AttributeName>,
+    pub insert_attributes: Vec<AttributeValue>,
+}
+
+#[derive(PartialEq, Eq, Debug, Serialize, Deserialize, Clone, Default)]
+pub struct CreateGroupRequest {
+    pub display_name: GroupName,
+    pub attributes: Vec<AttributeValue>,
+}
+
+#[derive(PartialEq, Eq, Debug, Serialize, Deserialize, Clone)]
+pub struct UpdateGroupRequest {
+    pub group_id: GroupId,
+    pub display_name: Option<GroupName>,
+    pub delete_attributes: Vec<AttributeName>,
+    pub insert_attributes: Vec<AttributeValue>,
+}
+
+#[derive(PartialEq, Eq, Debug, Serialize, Deserialize, Clone)]
+pub struct CreateAttributeRequest {
+    pub name: AttributeName,
+    pub attribute_type: AttributeType,
+    pub is_list: bool,
+    pub is_visible: bool,
+    pub is_editable: bool,
+}
diff --git a/crates/domain/src/schema.rs b/crates/domain/src/schema.rs
new file mode 100644
index 0000000..62c2110
--- /dev/null
+++ b/crates/domain/src/schema.rs
@@ -0,0 +1,39 @@
+use serde::{Deserialize, Serialize};
+
+use crate::types::{AttributeName, AttributeType, LdapObjectClass};
+
+#[derive(PartialEq, Eq, Debug, Serialize, Deserialize, Clone)]
+pub struct Schema {
+    pub user_attributes: AttributeList,
+    pub group_attributes: AttributeList,
+    pub extra_user_object_classes: Vec<LdapObjectClass>,
+    pub extra_group_object_classes: Vec<LdapObjectClass>,
+}
+
+#[derive(PartialEq, Eq, Debug, Serialize, Deserialize, Clone)]
+pub struct AttributeSchema {
+    pub name: AttributeName,
+    //TODO: pub aliases: Vec<String>,
+    pub attribute_type: AttributeType,
+    pub is_list: bool,
+    pub is_visible: bool,
+    pub is_editable: bool,
+    pub is_hardcoded: bool,
+    pub is_readonly: bool,
+}
+
+#[derive(PartialEq, Eq, Debug, Serialize, Deserialize, Clone)]
+pub struct AttributeList {
+    pub attributes: Vec<AttributeSchema>,
+}
+
+impl AttributeList {
+    pub fn get_attribute_schema(&self, name: &AttributeName) -> Option<&AttributeSchema> {
+        self.attributes.iter().find(|a| a.name == *name)
+    }
+
+    pub fn get_attribute_type(&self, name: &AttributeName) -> Option<(AttributeType, bool)> {
+        self.get_attribute_schema(name)
+            .map(|a| (a.attribute_type, a.is_list))
+    }
+}
diff --git a/server/src/domain/types.rs b/crates/domain/src/types.rs
similarity index 98%
rename from server/src/domain/types.rs
rename to crates/domain/src/types.rs
index 48e1be3..52d08e4 100644
--- a/server/src/domain/types.rs
+++ b/crates/domain/src/types.rs
@@ -11,7 +11,6 @@ use sea_orm::{
 use serde::{Deserialize, Serialize};
 use strum::{EnumString, IntoStaticStr};
 
-pub use super::model::UserColumn;
 pub use lldap_auth::types::UserId;
 
 #[derive(
@@ -66,11 +65,11 @@ impl<'a> std::convert::TryFrom<&'a str> for Uuid {
     }
 }
 
-#[cfg(test)]
+#[cfg(feature = "test")]
 #[macro_export]
 macro_rules! uuid {
     ($s:literal) => {
-        <$crate::domain::types::Uuid as std::convert::TryFrom<_>>::try_from($s).unwrap()
+        <lldap_domain::types::Uuid as std::convert::TryFrom<_>>::try_from($s).unwrap()
     };
 }
 
@@ -372,7 +371,7 @@ impl JpegPhoto {
         self.0
     }
 
-    #[cfg(test)]
+    #[cfg(any(feature = "test", test))]
     pub fn for_tests() -> Self {
         use image::{ImageOutputFormat, Rgb, RgbImage};
         let img = RgbImage::from_fn(32, 32, |x, y| {
@@ -424,7 +423,7 @@ pub struct User {
     pub attributes: Vec<AttributeValue>,
 }
 
-#[cfg(test)]
+#[cfg(feature = "test")]
 impl Default for User {
     fn default() -> Self {
         let epoch = chrono::Utc.timestamp_opt(0, 0).unwrap().naive_utc();
diff --git a/server/Cargo.toml b/server/Cargo.toml
index ab79b85..5195085 100644
--- a/server/Cargo.toml
+++ b/server/Cargo.toml
@@ -40,7 +40,6 @@ orion = "0.17"
 rand_chacha = "0.3"
 rustls-pemfile = "1"
 serde = "*"
-serde_bytes = "0.11"
 serde_json = "1"
 sha2 = "0.10"
 thiserror = "*"
@@ -85,6 +84,13 @@ version = "0.10.1"
 path = "../auth"
 features = ["opaque_server", "opaque_client", "sea_orm"]
 
+[dependencies.lldap_domain]
+path = "../crates/domain"
+
+[dev-dependencies.lldap_domain]
+path = "../crates/domain"
+features = ["test"]
+
 [dependencies.lldap_validation]
 path = "../validation"
 
@@ -119,20 +125,15 @@ version = "^0.1.6"
 features = ["default", "rustls"]
 version = "3"
 
-[dependencies.image]
-features = ["jpeg"]
-default-features = false
-version = "0.24"
-
 [dependencies.sea-orm]
 version = "0.12"
 default-features = false
 features = [
-  "macros",
-  "with-chrono",
-  "with-uuid",
-  "sqlx-all",
-  "runtime-actix-rustls",
+    "macros",
+    "with-chrono",
+    "with-uuid",
+    "sqlx-all",
+    "runtime-actix-rustls",
 ]
 
 [dependencies.reqwest]
diff --git a/server/src/domain/deserialize.rs b/server/src/domain/deserialize.rs
index 834b0fd..07b6fab 100644
--- a/server/src/domain/deserialize.rs
+++ b/server/src/domain/deserialize.rs
@@ -1,5 +1,5 @@
-use crate::domain::types::{AttributeType, JpegPhoto, Serialized};
 use anyhow::{bail, Context as AnyhowContext};
+use lldap_domain::types::{AttributeType, JpegPhoto, Serialized};
 
 pub fn deserialize_attribute_value(
     value: &[String],
diff --git a/server/src/domain/handler.rs b/server/src/domain/handler.rs
index 21a9796..dead961 100644
--- a/server/src/domain/handler.rs
+++ b/server/src/domain/handler.rs
@@ -1,12 +1,16 @@
-use crate::domain::{
-    error::Result,
+use crate::domain::{error::Result, model::UserColumn};
+use async_trait::async_trait;
+use lldap_domain::{
+    requests::{
+        CreateAttributeRequest, CreateGroupRequest, CreateUserRequest, UpdateGroupRequest,
+        UpdateUserRequest,
+    },
+    schema::Schema,
     types::{
-        AttributeName, AttributeType, AttributeValue, Email, Group, GroupDetails, GroupId,
-        GroupName, JpegPhoto, LdapObjectClass, Serialized, User, UserAndGroups, UserColumn, UserId,
-        Uuid,
+        AttributeName, Group, GroupDetails, GroupId, GroupName, LdapObjectClass, Serialized, User,
+        UserAndGroups, UserId, Uuid,
     },
 };
-use async_trait::async_trait;
 use serde::{Deserialize, Serialize};
 use std::collections::HashSet;
 
@@ -99,90 +103,6 @@ impl From<bool> for GroupRequestFilter {
     }
 }
 
-#[derive(PartialEq, Eq, Debug, Serialize, Deserialize, Clone, Default)]
-pub struct CreateUserRequest {
-    // Same fields as User, but no creation_date, and with password.
-    pub user_id: UserId,
-    pub email: Email,
-    pub display_name: Option<String>,
-    pub first_name: Option<String>,
-    pub last_name: Option<String>,
-    pub avatar: Option<JpegPhoto>,
-    pub attributes: Vec<AttributeValue>,
-}
-
-#[derive(PartialEq, Eq, Debug, Serialize, Deserialize, Clone, Default)]
-pub struct UpdateUserRequest {
-    // Same fields as CreateUserRequest, but no with an extra layer of Option.
-    pub user_id: UserId,
-    pub email: Option<Email>,
-    pub display_name: Option<String>,
-    pub first_name: Option<String>,
-    pub last_name: Option<String>,
-    pub avatar: Option<JpegPhoto>,
-    pub delete_attributes: Vec<AttributeName>,
-    pub insert_attributes: Vec<AttributeValue>,
-}
-
-#[derive(PartialEq, Eq, Debug, Serialize, Deserialize, Clone, Default)]
-pub struct CreateGroupRequest {
-    pub display_name: GroupName,
-    pub attributes: Vec<AttributeValue>,
-}
-
-#[derive(PartialEq, Eq, Debug, Serialize, Deserialize, Clone)]
-pub struct UpdateGroupRequest {
-    pub group_id: GroupId,
-    pub display_name: Option<GroupName>,
-    pub delete_attributes: Vec<AttributeName>,
-    pub insert_attributes: Vec<AttributeValue>,
-}
-
-#[derive(PartialEq, Eq, Debug, Serialize, Deserialize, Clone)]
-pub struct AttributeSchema {
-    pub name: AttributeName,
-    //TODO: pub aliases: Vec<String>,
-    pub attribute_type: AttributeType,
-    pub is_list: bool,
-    pub is_visible: bool,
-    pub is_editable: bool,
-    pub is_hardcoded: bool,
-    pub is_readonly: bool,
-}
-
-#[derive(PartialEq, Eq, Debug, Serialize, Deserialize, Clone)]
-pub struct CreateAttributeRequest {
-    pub name: AttributeName,
-    pub attribute_type: AttributeType,
-    pub is_list: bool,
-    pub is_visible: bool,
-    pub is_editable: bool,
-}
-
-#[derive(PartialEq, Eq, Debug, Serialize, Deserialize, Clone)]
-pub struct AttributeList {
-    pub attributes: Vec<AttributeSchema>,
-}
-
-impl AttributeList {
-    pub fn get_attribute_schema(&self, name: &AttributeName) -> Option<&AttributeSchema> {
-        self.attributes.iter().find(|a| a.name == *name)
-    }
-
-    pub fn get_attribute_type(&self, name: &AttributeName) -> Option<(AttributeType, bool)> {
-        self.get_attribute_schema(name)
-            .map(|a| (a.attribute_type, a.is_list))
-    }
-}
-
-#[derive(PartialEq, Eq, Debug, Serialize, Deserialize, Clone)]
-pub struct Schema {
-    pub user_attributes: AttributeList,
-    pub group_attributes: AttributeList,
-    pub extra_user_object_classes: Vec<LdapObjectClass>,
-    pub extra_group_object_classes: Vec<LdapObjectClass>,
-}
-
 #[async_trait]
 pub trait LoginHandler: Send + Sync {
     async fn bind(&self, request: BindRequest) -> Result<()>;
@@ -257,6 +177,7 @@ pub trait BackendHandler:
 mod tests {
     use super::*;
     use base64::Engine;
+    use lldap_domain::types::JpegPhoto;
     use pretty_assertions::assert_ne;
 
     #[test]
diff --git a/server/src/domain/ldap/group.rs b/server/src/domain/ldap/group.rs
index a670293..e03e3b9 100644
--- a/server/src/domain/ldap/group.rs
+++ b/server/src/domain/ldap/group.rs
@@ -17,7 +17,9 @@ use crate::domain::{
         },
     },
     schema::{PublicSchema, SchemaGroupAttributeExtractor},
-    types::{AttributeName, AttributeType, Group, GroupId, LdapObjectClass, UserId, Uuid},
+};
+use lldap_domain::types::{
+    AttributeName, AttributeType, Group, GroupId, LdapObjectClass, UserId, Uuid,
 };
 
 pub fn get_group_attribute(
diff --git a/server/src/domain/ldap/user.rs b/server/src/domain/ldap/user.rs
index e5dc130..18de297 100644
--- a/server/src/domain/ldap/user.rs
+++ b/server/src/domain/ldap/user.rs
@@ -16,11 +16,11 @@ use crate::domain::{
             LdapInfo, UserFieldType,
         },
     },
+    model::UserColumn,
     schema::{PublicSchema, SchemaUserAttributeExtractor},
-    types::{
-        AttributeName, AttributeType, GroupDetails, LdapObjectClass, User, UserAndGroups,
-        UserColumn, UserId,
-    },
+};
+use lldap_domain::types::{
+    AttributeName, AttributeType, GroupDetails, LdapObjectClass, User, UserAndGroups, UserId,
 };
 
 pub fn get_user_attribute(
diff --git a/server/src/domain/ldap/utils.rs b/server/src/domain/ldap/utils.rs
index 1f72422..5e0b4fa 100644
--- a/server/src/domain/ldap/utils.rs
+++ b/server/src/domain/ldap/utils.rs
@@ -7,10 +7,11 @@ use tracing::{debug, instrument, warn};
 use crate::domain::{
     handler::SubStringFilter,
     ldap::error::{LdapError, LdapResult},
+    model::UserColumn,
     schema::{PublicSchema, SchemaAttributeExtractor},
-    types::{
-        AttributeName, AttributeType, AttributeValue, GroupName, JpegPhoto, UserColumn, UserId,
-    },
+};
+use lldap_domain::types::{
+    AttributeName, AttributeType, AttributeValue, GroupName, JpegPhoto, UserId,
 };
 
 impl From<LdapSubstringFilter> for SubStringFilter {
diff --git a/server/src/domain/mod.rs b/server/src/domain/mod.rs
index 9475249..80e5857 100644
--- a/server/src/domain/mod.rs
+++ b/server/src/domain/mod.rs
@@ -12,4 +12,3 @@ pub mod sql_opaque_handler;
 pub mod sql_schema_backend_handler;
 pub mod sql_tables;
 pub mod sql_user_backend_handler;
-pub mod types;
diff --git a/server/src/domain/model/group_attribute_schema.rs b/server/src/domain/model/group_attribute_schema.rs
index 4529185..d9fd9e4 100644
--- a/server/src/domain/model/group_attribute_schema.rs
+++ b/server/src/domain/model/group_attribute_schema.rs
@@ -1,8 +1,8 @@
 use sea_orm::entity::prelude::*;
 use serde::{Deserialize, Serialize};
 
-use crate::domain::{
-    handler::AttributeSchema,
+use lldap_domain::{
+    schema::AttributeSchema,
     types::{AttributeName, AttributeType},
 };
 
diff --git a/server/src/domain/model/group_attributes.rs b/server/src/domain/model/group_attributes.rs
index eddc513..933c8e4 100644
--- a/server/src/domain/model/group_attributes.rs
+++ b/server/src/domain/model/group_attributes.rs
@@ -1,7 +1,7 @@
 use sea_orm::entity::prelude::*;
 use serde::{Deserialize, Serialize};
 
-use crate::domain::types::{AttributeName, AttributeValue, GroupId, Serialized};
+use lldap_domain::types::{AttributeName, AttributeValue, GroupId, Serialized};
 
 #[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq, Serialize, Deserialize)]
 #[sea_orm(table_name = "group_attributes")]
diff --git a/server/src/domain/model/group_object_classes.rs b/server/src/domain/model/group_object_classes.rs
index 2f653c3..155f73d 100644
--- a/server/src/domain/model/group_object_classes.rs
+++ b/server/src/domain/model/group_object_classes.rs
@@ -1,7 +1,7 @@
 use sea_orm::entity::prelude::*;
 use serde::{Deserialize, Serialize};
 
-use crate::domain::types::LdapObjectClass;
+use lldap_domain::types::LdapObjectClass;
 
 #[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq, Serialize, Deserialize)]
 #[sea_orm(table_name = "group_object_classes")]
diff --git a/server/src/domain/model/groups.rs b/server/src/domain/model/groups.rs
index e0c960d..a44d10e 100644
--- a/server/src/domain/model/groups.rs
+++ b/server/src/domain/model/groups.rs
@@ -3,7 +3,7 @@
 use sea_orm::entity::prelude::*;
 use serde::{Deserialize, Serialize};
 
-use crate::domain::types::{GroupId, GroupName, Uuid};
+use lldap_domain::types::{GroupId, GroupName, Uuid};
 
 #[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq, Serialize, Deserialize)]
 #[sea_orm(table_name = "groups")]
@@ -30,7 +30,7 @@ impl Related<super::memberships::Entity> for Entity {
 
 impl ActiveModelBehavior for ActiveModel {}
 
-impl From<Model> for crate::domain::types::Group {
+impl From<Model> for lldap_domain::types::Group {
     fn from(group: Model) -> Self {
         Self {
             id: group.group_id,
@@ -43,7 +43,7 @@ impl From<Model> for crate::domain::types::Group {
     }
 }
 
-impl From<Model> for crate::domain::types::GroupDetails {
+impl From<Model> for lldap_domain::types::GroupDetails {
     fn from(group: Model) -> Self {
         Self {
             group_id: group.group_id,
diff --git a/server/src/domain/model/jwt_refresh_storage.rs b/server/src/domain/model/jwt_refresh_storage.rs
index ebca1b1..56afa5a 100644
--- a/server/src/domain/model/jwt_refresh_storage.rs
+++ b/server/src/domain/model/jwt_refresh_storage.rs
@@ -3,7 +3,7 @@
 use sea_orm::entity::prelude::*;
 use serde::{Deserialize, Serialize};
 
-use crate::domain::types::UserId;
+use lldap_domain::types::UserId;
 
 #[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq, Serialize, Deserialize)]
 #[sea_orm(table_name = "jwt_refresh_storage")]
diff --git a/server/src/domain/model/jwt_storage.rs b/server/src/domain/model/jwt_storage.rs
index 6ca9208..e8e0836 100644
--- a/server/src/domain/model/jwt_storage.rs
+++ b/server/src/domain/model/jwt_storage.rs
@@ -3,7 +3,7 @@
 use sea_orm::entity::prelude::*;
 use serde::{Deserialize, Serialize};
 
-use crate::domain::types::UserId;
+use lldap_domain::types::UserId;
 
 #[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq, Serialize, Deserialize)]
 #[sea_orm(table_name = "jwt_storage")]
diff --git a/server/src/domain/model/memberships.rs b/server/src/domain/model/memberships.rs
index a1fb5a7..9de4030 100644
--- a/server/src/domain/model/memberships.rs
+++ b/server/src/domain/model/memberships.rs
@@ -3,7 +3,7 @@
 use sea_orm::entity::prelude::*;
 use serde::{Deserialize, Serialize};
 
-use crate::domain::types::{GroupId, UserId};
+use lldap_domain::types::{GroupId, UserId};
 
 #[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq, Serialize, Deserialize)]
 #[sea_orm(table_name = "memberships")]
diff --git a/server/src/domain/model/password_reset_tokens.rs b/server/src/domain/model/password_reset_tokens.rs
index a252b36..26d1ae7 100644
--- a/server/src/domain/model/password_reset_tokens.rs
+++ b/server/src/domain/model/password_reset_tokens.rs
@@ -3,7 +3,7 @@
 use sea_orm::entity::prelude::*;
 use serde::{Deserialize, Serialize};
 
-use crate::domain::types::UserId;
+use lldap_domain::types::UserId;
 
 #[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq, Serialize, Deserialize)]
 #[sea_orm(table_name = "password_reset_tokens")]
diff --git a/server/src/domain/model/user_attribute_schema.rs b/server/src/domain/model/user_attribute_schema.rs
index 434840e..7161b97 100644
--- a/server/src/domain/model/user_attribute_schema.rs
+++ b/server/src/domain/model/user_attribute_schema.rs
@@ -1,8 +1,8 @@
 use sea_orm::entity::prelude::*;
 use serde::{Deserialize, Serialize};
 
-use crate::domain::{
-    handler::AttributeSchema,
+use lldap_domain::{
+    schema::AttributeSchema,
     types::{AttributeName, AttributeType},
 };
 
diff --git a/server/src/domain/model/user_attributes.rs b/server/src/domain/model/user_attributes.rs
index d6b6aa2..7b2ccc2 100644
--- a/server/src/domain/model/user_attributes.rs
+++ b/server/src/domain/model/user_attributes.rs
@@ -1,7 +1,7 @@
 use sea_orm::entity::prelude::*;
 use serde::{Deserialize, Serialize};
 
-use crate::domain::types::{AttributeName, AttributeValue, Serialized, UserId};
+use lldap_domain::types::{AttributeName, AttributeValue, Serialized, UserId};
 
 #[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq, Serialize, Deserialize)]
 #[sea_orm(table_name = "user_attributes")]
diff --git a/server/src/domain/model/user_object_classes.rs b/server/src/domain/model/user_object_classes.rs
index 9bdfe97..a3fb6ad 100644
--- a/server/src/domain/model/user_object_classes.rs
+++ b/server/src/domain/model/user_object_classes.rs
@@ -1,7 +1,7 @@
 use sea_orm::entity::prelude::*;
 use serde::{Deserialize, Serialize};
 
-use crate::domain::types::LdapObjectClass;
+use lldap_domain::types::LdapObjectClass;
 
 #[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq, Serialize, Deserialize)]
 #[sea_orm(table_name = "user_object_classes")]
diff --git a/server/src/domain/model/users.rs b/server/src/domain/model/users.rs
index 6f7183a..6f17188 100644
--- a/server/src/domain/model/users.rs
+++ b/server/src/domain/model/users.rs
@@ -3,7 +3,7 @@
 use sea_orm::{entity::prelude::*, sea_query::BlobSize};
 use serde::{Deserialize, Serialize};
 
-use crate::domain::types::{Email, UserId, Uuid};
+use lldap_domain::types::{Email, UserId, Uuid};
 
 #[derive(Copy, Clone, Default, Debug, DeriveEntity)]
 pub struct Entity;
@@ -112,7 +112,7 @@ impl Related<super::password_reset_tokens::Entity> for Entity {
 
 impl ActiveModelBehavior for ActiveModel {}
 
-impl From<Model> for crate::domain::types::User {
+impl From<Model> for lldap_domain::types::User {
     fn from(user: Model) -> Self {
         Self {
             user_id: user.user_id,
diff --git a/server/src/domain/opaque_handler.rs b/server/src/domain/opaque_handler.rs
index 13ed81a..7e1cd1c 100644
--- a/server/src/domain/opaque_handler.rs
+++ b/server/src/domain/opaque_handler.rs
@@ -1,5 +1,6 @@
-use crate::domain::{error::Result, types::UserId};
+use crate::domain::error::Result;
 use async_trait::async_trait;
+use lldap_domain::types::UserId;
 
 pub use lldap_auth::{login, registration};
 
diff --git a/server/src/domain/schema.rs b/server/src/domain/schema.rs
index 8aad05c..2bf5ac0 100644
--- a/server/src/domain/schema.rs
+++ b/server/src/domain/schema.rs
@@ -1,5 +1,5 @@
-use crate::domain::{
-    handler::{AttributeList, AttributeSchema, Schema},
+use lldap_domain::{
+    schema::{AttributeList, AttributeSchema, Schema},
     types::AttributeType,
 };
 use serde::{Deserialize, Serialize};
diff --git a/server/src/domain/sql_backend_handler.rs b/server/src/domain/sql_backend_handler.rs
index 5963e7d..2702771 100644
--- a/server/src/domain/sql_backend_handler.rs
+++ b/server/src/domain/sql_backend_handler.rs
@@ -23,15 +23,18 @@ pub mod tests {
     use crate::{
         domain::{
             handler::{
-                CreateGroupRequest, CreateUserRequest, GroupBackendHandler, UserBackendHandler,
-                UserListerBackendHandler, UserRequestFilter,
+                GroupBackendHandler, UserBackendHandler, UserListerBackendHandler,
+                UserRequestFilter,
             },
             sql_tables::init_table,
-            types::{GroupId, UserId},
         },
         infra::configuration::ConfigurationBuilder,
     };
     use lldap_auth::{opaque, registration};
+    use lldap_domain::{
+        requests::{CreateGroupRequest, CreateUserRequest},
+        types::{GroupId, UserId},
+    };
     use pretty_assertions::assert_eq;
     use sea_orm::Database;
 
diff --git a/server/src/domain/sql_group_backend_handler.rs b/server/src/domain/sql_group_backend_handler.rs
index ffa707a..911e43b 100644
--- a/server/src/domain/sql_group_backend_handler.rs
+++ b/server/src/domain/sql_group_backend_handler.rs
@@ -1,14 +1,14 @@
 use crate::domain::{
     error::{DomainError, Result},
-    handler::{
-        CreateGroupRequest, GroupBackendHandler, GroupListerBackendHandler, GroupRequestFilter,
-        UpdateGroupRequest,
-    },
+    handler::{GroupBackendHandler, GroupListerBackendHandler, GroupRequestFilter},
     model::{self, GroupColumn, MembershipColumn},
     sql_backend_handler::SqlBackendHandler,
-    types::{AttributeName, AttributeValue, Group, GroupDetails, GroupId, Serialized, Uuid},
 };
 use async_trait::async_trait;
+use lldap_domain::{
+    requests::{CreateGroupRequest, UpdateGroupRequest},
+    types::{AttributeName, AttributeValue, Group, GroupDetails, GroupId, Serialized, Uuid},
+};
 use sea_orm::{
     sea_query::{Alias, Cond, Expr, Func, IntoCondition, OnConflict, SimpleExpr},
     ActiveModelTrait, ColumnTrait, DatabaseTransaction, EntityTrait, QueryFilter, QueryOrder,
@@ -314,8 +314,11 @@ impl SqlBackendHandler {
 mod tests {
     use super::*;
     use crate::domain::{
-        handler::{CreateAttributeRequest, SchemaBackendHandler, SubStringFilter},
+        handler::{SchemaBackendHandler, SubStringFilter},
         sql_backend_handler::tests::*,
+    };
+    use lldap_domain::{
+        requests::CreateAttributeRequest,
         types::{AttributeType, GroupName, Serialized, UserId},
     };
     use pretty_assertions::assert_eq;
diff --git a/server/src/domain/sql_migrations.rs b/server/src/domain/sql_migrations.rs
index 64630a1..82e4b8f 100644
--- a/server/src/domain/sql_migrations.rs
+++ b/server/src/domain/sql_migrations.rs
@@ -1,8 +1,6 @@
-use crate::domain::{
-    sql_tables::{DbConnection, SchemaVersion, LAST_SCHEMA_VERSION},
-    types::{AttributeType, GroupId, JpegPhoto, Serialized, UserId, Uuid},
-};
+use crate::domain::sql_tables::{DbConnection, SchemaVersion, LAST_SCHEMA_VERSION};
 use itertools::Itertools;
+use lldap_domain::types::{AttributeType, GroupId, JpegPhoto, Serialized, UserId, Uuid};
 use sea_orm::{
     sea_query::{
         self, all, BinOper, BlobSize::Blob, ColumnDef, Expr, ForeignKey, ForeignKeyAction, Func,
diff --git a/server/src/domain/sql_opaque_handler.rs b/server/src/domain/sql_opaque_handler.rs
index 1aaedcb..14c6d30 100644
--- a/server/src/domain/sql_opaque_handler.rs
+++ b/server/src/domain/sql_opaque_handler.rs
@@ -4,11 +4,11 @@ use super::{
     model::{self, UserColumn},
     opaque_handler::{login, registration, OpaqueHandler},
     sql_backend_handler::SqlBackendHandler,
-    types::UserId,
 };
 use async_trait::async_trait;
 use base64::Engine;
 use lldap_auth::opaque;
+use lldap_domain::types::UserId;
 use sea_orm::{ActiveModelTrait, ActiveValue, EntityTrait, QuerySelect};
 use secstr::SecUtf8;
 use tracing::{debug, info, instrument, warn};
diff --git a/server/src/domain/sql_schema_backend_handler.rs b/server/src/domain/sql_schema_backend_handler.rs
index bea2fbd..0aafeeb 100644
--- a/server/src/domain/sql_schema_backend_handler.rs
+++ b/server/src/domain/sql_schema_backend_handler.rs
@@ -1,14 +1,15 @@
 use crate::domain::{
     error::{DomainError, Result},
-    handler::{
-        AttributeList, AttributeSchema, CreateAttributeRequest, ReadSchemaBackendHandler, Schema,
-        SchemaBackendHandler,
-    },
+    handler::{ReadSchemaBackendHandler, SchemaBackendHandler},
     model,
     sql_backend_handler::SqlBackendHandler,
-    types::{AttributeName, LdapObjectClass},
 };
 use async_trait::async_trait;
+use lldap_domain::{
+    requests::CreateAttributeRequest,
+    schema::{AttributeList, AttributeSchema, Schema},
+    types::{AttributeName, LdapObjectClass},
+};
 use sea_orm::{
     ActiveModelTrait, DatabaseTransaction, EntityTrait, QueryOrder, Set, TransactionTrait,
 };
@@ -175,10 +176,12 @@ impl SqlBackendHandler {
 mod tests {
     use super::*;
     use crate::domain::{
-        handler::{AttributeList, UpdateUserRequest, UserBackendHandler, UserRequestFilter},
+        handler::{UserBackendHandler, UserRequestFilter},
         sql_backend_handler::tests::*,
-        types::{AttributeType, AttributeValue, Serialized},
     };
+    use lldap_domain::requests::UpdateUserRequest;
+    use lldap_domain::schema::AttributeList;
+    use lldap_domain::types::{AttributeType, AttributeValue, Serialized};
     use pretty_assertions::assert_eq;
 
     #[tokio::test]
diff --git a/server/src/domain/sql_tables.rs b/server/src/domain/sql_tables.rs
index 6745e61..b297821 100644
--- a/server/src/domain/sql_tables.rs
+++ b/server/src/domain/sql_tables.rs
@@ -123,10 +123,8 @@ pub async fn set_private_key_info(pool: &DbConnection, info: PrivateKeyInfo) ->
 
 #[cfg(test)]
 mod tests {
-    use crate::domain::{
-        sql_migrations,
-        types::{GroupId, JpegPhoto, Serialized, Uuid},
-    };
+    use crate::domain::sql_migrations;
+    use lldap_domain::types::{GroupId, JpegPhoto, Serialized, Uuid};
     use pretty_assertions::assert_eq;
 
     use super::*;
@@ -254,11 +252,11 @@ mod tests {
             vec![
                 SimpleUser {
                     display_name: None,
-                    uuid: crate::uuid!("a02eaf13-48a7-30f6-a3d4-040ff7c52b04")
+                    uuid: lldap_domain::uuid!("a02eaf13-48a7-30f6-a3d4-040ff7c52b04")
                 },
                 SimpleUser {
                     display_name: Some("John Doe".to_owned()),
-                    uuid: crate::uuid!("986765a5-3f03-389e-b47b-536b2d6e1bec")
+                    uuid: lldap_domain::uuid!("986765a5-3f03-389e-b47b-536b2d6e1bec")
                 }
             ]
         );
diff --git a/server/src/domain/sql_user_backend_handler.rs b/server/src/domain/sql_user_backend_handler.rs
index a3768b5..fbbdf46 100644
--- a/server/src/domain/sql_user_backend_handler.rs
+++ b/server/src/domain/sql_user_backend_handler.rs
@@ -1,17 +1,17 @@
 use crate::domain::{
     error::{DomainError, Result},
-    handler::{
-        CreateUserRequest, UpdateUserRequest, UserBackendHandler, UserListerBackendHandler,
-        UserRequestFilter,
-    },
+    handler::{UserBackendHandler, UserListerBackendHandler, UserRequestFilter},
     model::{self, GroupColumn, UserColumn},
     sql_backend_handler::SqlBackendHandler,
+};
+use async_trait::async_trait;
+use lldap_domain::{
+    requests::{CreateUserRequest, UpdateUserRequest},
     types::{
         AttributeName, AttributeValue, GroupDetails, GroupId, Serialized, User, UserAndGroups,
         UserId, Uuid,
     },
 };
-use async_trait::async_trait;
 use sea_orm::{
     sea_query::{
         query::OnConflict, Alias, Cond, Expr, Func, IntoColumnRef, IntoCondition, SimpleExpr,
@@ -430,10 +430,9 @@ impl UserBackendHandler for SqlBackendHandler {
 mod tests {
     use super::*;
     use crate::domain::{
-        handler::SubStringFilter,
-        sql_backend_handler::tests::*,
-        types::{JpegPhoto, UserColumn},
+        handler::SubStringFilter, model::UserColumn, sql_backend_handler::tests::*,
     };
+    use lldap_domain::types::JpegPhoto;
     use pretty_assertions::{assert_eq, assert_ne};
 
     #[tokio::test]
diff --git a/server/src/infra/access_control.rs b/server/src/infra/access_control.rs
index 976df75..312fb19 100644
--- a/server/src/infra/access_control.rs
+++ b/server/src/infra/access_control.rs
@@ -6,12 +6,18 @@ use tracing::info;
 use crate::domain::{
     error::Result,
     handler::{
-        AttributeSchema, BackendHandler, CreateAttributeRequest, CreateGroupRequest,
-        CreateUserRequest, GroupBackendHandler, GroupListerBackendHandler, GroupRequestFilter,
-        ReadSchemaBackendHandler, Schema, SchemaBackendHandler, UpdateGroupRequest,
-        UpdateUserRequest, UserBackendHandler, UserListerBackendHandler, UserRequestFilter,
+        BackendHandler, GroupBackendHandler, GroupListerBackendHandler, GroupRequestFilter,
+        ReadSchemaBackendHandler, SchemaBackendHandler, UserBackendHandler,
+        UserListerBackendHandler, UserRequestFilter,
     },
     schema::PublicSchema,
+};
+use lldap_domain::{
+    requests::{
+        CreateAttributeRequest, CreateGroupRequest, CreateUserRequest, UpdateGroupRequest,
+        UpdateUserRequest,
+    },
+    schema::{AttributeSchema, Schema},
     types::{
         AttributeName, Group, GroupDetails, GroupId, GroupName, LdapObjectClass, User,
         UserAndGroups, UserId,
diff --git a/server/src/infra/auth_service.rs b/server/src/infra/auth_service.rs
index 39e0e08..8846418 100644
--- a/server/src/infra/auth_service.rs
+++ b/server/src/infra/auth_service.rs
@@ -22,13 +22,14 @@ use time::ext::NumericalDuration;
 use tracing::{debug, info, instrument, warn};
 
 use lldap_auth::{login, password_reset, registration, JWTClaims};
+use lldap_domain::types::{GroupDetails, GroupName, UserId};
 
 use crate::{
     domain::{
         error::DomainError,
         handler::{BackendHandler, BindRequest, LoginHandler, UserRequestFilter},
+        model::UserColumn,
         opaque_handler::OpaqueHandler,
-        types::{GroupDetails, GroupName, UserColumn, UserId},
     },
     infra::{
         access_control::{ReadonlyBackendHandler, UserReadableBackendHandler, ValidationResults},
diff --git a/server/src/infra/configuration.rs b/server/src/infra/configuration.rs
index 60c713d..421039c 100644
--- a/server/src/infra/configuration.rs
+++ b/server/src/infra/configuration.rs
@@ -1,10 +1,7 @@
 use std::collections::HashSet;
 
 use crate::{
-    domain::{
-        sql_tables::{ConfigLocation, PrivateKeyHash, PrivateKeyInfo, PrivateKeyLocation},
-        types::{AttributeName, UserId},
-    },
+    domain::sql_tables::{ConfigLocation, PrivateKeyHash, PrivateKeyInfo, PrivateKeyLocation},
     infra::{
         cli::{
             GeneralConfigOpts, LdapsOpts, RunOpts, SmtpEncryption, SmtpOpts, TestEmailOpts,
@@ -20,6 +17,7 @@ use figment::{
 };
 use figment_file_provider_adapter::FileAdapter;
 use lldap_auth::opaque::{server::ServerSetup, KeyPair};
+use lldap_domain::types::{AttributeName, UserId};
 use secstr::SecUtf8;
 use serde::{Deserialize, Serialize};
 use std::path::PathBuf;
@@ -623,7 +621,7 @@ where
             Either set the `jwt_secret` config value or the `LLDAP_JWT_SECRET` environment variable. \
             You can generate the value by running\n\
             LC_ALL=C tr -dc 'A-Za-z0-9!#%&'\\''()*+,-./:;<=>?@[\\]^_{{|}}~' </dev/urandom | head -c 32; echo ''\n\
-            or you can use this random value: {}", 
+            or you can use this random value: {}",
         rand::thread_rng()
             .sample_iter(&Symbols)
             .take(32)
diff --git a/server/src/infra/graphql/api.rs b/server/src/infra/graphql/api.rs
index 096b666..27cd05b 100644
--- a/server/src/infra/graphql/api.rs
+++ b/server/src/infra/graphql/api.rs
@@ -1,5 +1,5 @@
 use crate::{
-    domain::{handler::BackendHandler, types::UserId},
+    domain::handler::BackendHandler,
     infra::{
         access_control::{
             AccessControlledBackendHandler, AdminBackendHandler, ReadonlyBackendHandler,
@@ -11,6 +11,7 @@ use crate::{
         tcp_server::AppState,
     },
 };
+
 use actix_web::FromRequest;
 use actix_web::HttpMessage;
 use actix_web::{error::JsonPayloadError, web, Error, HttpRequest, HttpResponse};
@@ -22,6 +23,7 @@ use juniper::{
     },
     EmptySubscription, FieldError, RootNode, ScalarValue,
 };
+use lldap_domain::types::UserId;
 use tracing::debug;
 
 pub struct Context<Handler: BackendHandler> {
diff --git a/server/src/infra/graphql/mutation.rs b/server/src/infra/graphql/mutation.rs
index ef15aa1..ad51bdb 100644
--- a/server/src/infra/graphql/mutation.rs
+++ b/server/src/infra/graphql/mutation.rs
@@ -2,16 +2,7 @@ use std::sync::Arc;
 
 use crate::{
     domain::{
-        deserialize::deserialize_attribute_value,
-        handler::{
-            AttributeList, BackendHandler, CreateAttributeRequest, CreateGroupRequest,
-            CreateUserRequest, UpdateGroupRequest, UpdateUserRequest,
-        },
-        schema::PublicSchema,
-        types::{
-            AttributeName, AttributeType, AttributeValue as DomainAttributeValue, Email, GroupId,
-            JpegPhoto, LdapObjectClass, UserId,
-        },
+        deserialize::deserialize_attribute_value, handler::BackendHandler, schema::PublicSchema,
     },
     infra::{
         access_control::{
@@ -24,6 +15,17 @@ use crate::{
 use anyhow::{anyhow, Context as AnyhowContext};
 use base64::Engine;
 use juniper::{graphql_object, FieldError, FieldResult, GraphQLInputObject, GraphQLObject};
+use lldap_domain::{
+    requests::{
+        CreateAttributeRequest, CreateGroupRequest, CreateUserRequest, UpdateGroupRequest,
+        UpdateUserRequest,
+    },
+    schema::AttributeList,
+    types::{
+        AttributeName, AttributeType, AttributeValue as DomainAttributeValue, Email, GroupId,
+        JpegPhoto, LdapObjectClass, UserId,
+    },
+};
 use lldap_validation::attributes::{validate_attribute_name, ALLOWED_CHARACTERS_DESCRIPTION};
 use tracing::{debug, debug_span, Instrument, Span};
 
@@ -731,18 +733,16 @@ fn deserialize_attribute(
 mod tests {
 
     use super::*;
-    use crate::{
-        domain::types::{AttributeName, AttributeType},
-        infra::{
-            access_control::{Permission, ValidationResults},
-            graphql::query::Query,
-            test_utils::MockTestBackendHandler,
-        },
+    use crate::infra::{
+        access_control::{Permission, ValidationResults},
+        graphql::query::Query,
+        test_utils::MockTestBackendHandler,
     };
     use juniper::{
         execute, graphql_value, DefaultScalarValue, EmptySubscription, GraphQLType, InputValue,
         RootNode, Variables,
     };
+    use lldap_domain::types::{AttributeName, AttributeType};
     use mockall::predicate::eq;
     use pretty_assertions::assert_eq;
 
diff --git a/server/src/infra/graphql/query.rs b/server/src/infra/graphql/query.rs
index 4265609..c9e481b 100644
--- a/server/src/infra/graphql/query.rs
+++ b/server/src/infra/graphql/query.rs
@@ -7,9 +7,6 @@ use crate::{
         ldap::utils::{map_user_field, UserFieldType},
         model::UserColumn,
         schema::PublicSchema,
-        types::{
-            AttributeType, GroupDetails, GroupId, JpegPhoto, LdapObjectClass, Serialized, UserId,
-        },
     },
     infra::{
         access_control::{ReadonlyBackendHandler, UserReadableBackendHandler},
@@ -19,16 +16,19 @@ use crate::{
 use anyhow::Context as AnyhowContext;
 use chrono::{NaiveDateTime, TimeZone};
 use juniper::{graphql_object, FieldResult, GraphQLInputObject};
+use lldap_domain::types::{
+    AttributeType, GroupDetails, GroupId, JpegPhoto, LdapObjectClass, Serialized, UserId,
+};
 use serde::{Deserialize, Serialize};
 use tracing::{debug, debug_span, Instrument, Span};
 
 type DomainRequestFilter = crate::domain::handler::UserRequestFilter;
-type DomainUser = crate::domain::types::User;
-type DomainGroup = crate::domain::types::Group;
-type DomainUserAndGroups = crate::domain::types::UserAndGroups;
-type DomainAttributeList = crate::domain::handler::AttributeList;
-type DomainAttributeSchema = crate::domain::handler::AttributeSchema;
-type DomainAttributeValue = crate::domain::types::AttributeValue;
+type DomainUser = lldap_domain::types::User;
+type DomainGroup = lldap_domain::types::Group;
+type DomainUserAndGroups = lldap_domain::types::UserAndGroups;
+type DomainAttributeList = lldap_domain::schema::AttributeList;
+type DomainAttributeSchema = lldap_domain::schema::AttributeSchema;
+type DomainAttributeValue = lldap_domain::types::AttributeValue;
 
 #[derive(PartialEq, Eq, Debug, GraphQLInputObject)]
 /// A filter for requests, specifying a boolean expression based on field constraints. Only one of
@@ -801,21 +801,19 @@ impl<Handler: BackendHandler> AttributeValue<Handler> {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use crate::{
-        domain::{
-            handler::AttributeList,
-            types::{AttributeName, AttributeType, LdapObjectClass, Serialized},
-        },
-        infra::{
-            access_control::{Permission, ValidationResults},
-            test_utils::{setup_default_schema, MockTestBackendHandler},
-        },
+    use crate::infra::{
+        access_control::{Permission, ValidationResults},
+        test_utils::{setup_default_schema, MockTestBackendHandler},
     };
     use chrono::TimeZone;
     use juniper::{
         execute, graphql_value, DefaultScalarValue, EmptyMutation, EmptySubscription, GraphQLType,
         RootNode, Variables,
     };
+    use lldap_domain::{
+        schema::{AttributeList, Schema},
+        types::{AttributeName, AttributeType, LdapObjectClass, Serialized},
+    };
     use mockall::predicate::eq;
     use pretty_assertions::assert_eq;
     use std::collections::HashSet;
@@ -860,7 +858,7 @@ mod tests {
 
         let mut mock = MockTestBackendHandler::new();
         mock.expect_get_schema().returning(|| {
-            Ok(crate::domain::handler::Schema {
+            Ok(Schema {
                 user_attributes: DomainAttributeList {
                     attributes: vec![
                         DomainAttributeSchema {
@@ -908,7 +906,7 @@ mod tests {
                     user_id: UserId::new("bob"),
                     email: "bob@bobbers.on".into(),
                     creation_date: chrono::Utc.timestamp_millis_opt(42).unwrap().naive_utc(),
-                    uuid: crate::uuid!("b1a2a3a4b1b2c1c2d1d2d3d4d5d6d7d8"),
+                    uuid: lldap_domain::uuid!("b1a2a3a4b1b2c1c2d1d2d3d4d5d6d7d8"),
                     attributes: vec![
                         DomainAttributeValue {
                             name: "first_name".into(),
@@ -927,7 +925,7 @@ mod tests {
             group_id: GroupId(3),
             display_name: "Bobbersons".into(),
             creation_date: chrono::Utc.timestamp_nanos(42).naive_utc(),
-            uuid: crate::uuid!("a1a2a3a4b1b2c1c2d1d2d3d4d5d6d7d8"),
+            uuid: lldap_domain::uuid!("a1a2a3a4b1b2c1c2d1d2d3d4d5d6d7d8"),
             attributes: vec![DomainAttributeValue {
                 name: "club_name".into(),
                 value: Serialized::from("Gang of Four"),
@@ -937,7 +935,7 @@ mod tests {
             group_id: GroupId(7),
             display_name: "Jefferees".into(),
             creation_date: chrono::Utc.timestamp_nanos(12).naive_utc(),
-            uuid: crate::uuid!("b1a2a3a4b1b2c1c2d1d2d3d4d5d6d7d8"),
+            uuid: lldap_domain::uuid!("b1a2a3a4b1b2c1c2d1d2d3d4d5d6d7d8"),
             attributes: Vec::new(),
         });
         mock.expect_get_user_groups()
@@ -1299,7 +1297,7 @@ mod tests {
         let mut mock = MockTestBackendHandler::new();
 
         mock.expect_get_schema().times(1).return_once(|| {
-            Ok(crate::domain::handler::Schema {
+            Ok(Schema {
                 user_attributes: AttributeList {
                     attributes: vec![DomainAttributeSchema {
                         name: "invisible".into(),
diff --git a/server/src/infra/ldap_handler.rs b/server/src/infra/ldap_handler.rs
index 7257c31..e943f7d 100644
--- a/server/src/infra/ldap_handler.rs
+++ b/server/src/infra/ldap_handler.rs
@@ -1,8 +1,6 @@
 use crate::{
     domain::{
-        handler::{
-            BackendHandler, BindRequest, CreateUserRequest, LoginHandler, ReadSchemaBackendHandler,
-        },
+        handler::{BackendHandler, BindRequest, LoginHandler, ReadSchemaBackendHandler},
         ldap::{
             error::{LdapError, LdapResult},
             group::{convert_groups_to_ldap_op, get_groups_list},
@@ -13,7 +11,6 @@ use crate::{
         },
         opaque_handler::OpaqueHandler,
         schema::PublicSchema,
-        types::{AttributeName, Email, Group, JpegPhoto, UserAndGroups, UserId},
     },
     infra::access_control::{
         AccessControlledBackendHandler, AdminBackendHandler, UserAndGroupListerBackendHandler,
@@ -28,6 +25,10 @@ use ldap3_proto::proto::{
     LdapResult as LdapResultOp, LdapResultCode, LdapSearchRequest, LdapSearchResultEntry,
     LdapSearchScope,
 };
+use lldap_domain::{
+    requests::CreateUserRequest,
+    types::{AttributeName, Email, Group, JpegPhoto, UserAndGroups, UserId},
+};
 use std::collections::HashMap;
 use tracing::{debug, instrument, warn};
 
@@ -879,12 +880,15 @@ impl<Backend: BackendHandler + LoginHandler + OpaqueHandler> LdapHandler<Backend
 mod tests {
     use super::*;
     use crate::{
-        domain::{handler::*, types::*},
+        domain::handler::*,
+        domain::model::UserColumn,
         infra::test_utils::{setup_default_schema, MockTestBackendHandler},
-        uuid,
     };
     use chrono::TimeZone;
     use ldap3_proto::proto::{LdapDerefAliases, LdapSearchScope, LdapSubstringFilter};
+    use lldap_domain::schema::{AttributeList, AttributeSchema, Schema};
+    use lldap_domain::types::*;
+    use lldap_domain::uuid;
     use mockall::predicate::eq;
     use pretty_assertions::assert_eq;
     use std::collections::HashSet;
@@ -1691,7 +1695,7 @@ mod tests {
                 }])
             });
         mock.expect_get_schema().returning(|| {
-            Ok(crate::domain::handler::Schema {
+            Ok(Schema {
                 user_attributes: AttributeList {
                     attributes: Vec::new(),
                 },
@@ -3020,7 +3024,7 @@ mod tests {
             }])
         });
         mock.expect_get_schema().returning(|| {
-            Ok(crate::domain::handler::Schema {
+            Ok(Schema {
                 user_attributes: AttributeList {
                     attributes: vec![AttributeSchema {
                         name: "nickname".into(),
diff --git a/server/src/infra/ldap_server.rs b/server/src/infra/ldap_server.rs
index d2e5eb1..858898e 100644
--- a/server/src/infra/ldap_server.rs
+++ b/server/src/infra/ldap_server.rs
@@ -2,7 +2,6 @@ use crate::{
     domain::{
         handler::{BackendHandler, LoginHandler},
         opaque_handler::OpaqueHandler,
-        types::AttributeName,
     },
     infra::{
         access_control::AccessControlledBackendHandler,
@@ -15,6 +14,7 @@ use actix_server::ServerBuilder;
 use actix_service::{fn_service, ServiceFactoryExt};
 use anyhow::{anyhow, Context, Result};
 use ldap3_proto::{control::LdapControl, proto::LdapMsg, proto::LdapOp, LdapCodec};
+use lldap_domain::types::AttributeName;
 use rustls::PrivateKey;
 use tokio_rustls::TlsAcceptor as RustlsTlsAcceptor;
 use tokio_util::codec::{FramedRead, FramedWrite};
diff --git a/server/src/infra/sql_backend_handler.rs b/server/src/infra/sql_backend_handler.rs
index b64d13d..17b20cd 100644
--- a/server/src/infra/sql_backend_handler.rs
+++ b/server/src/infra/sql_backend_handler.rs
@@ -3,10 +3,10 @@ use crate::domain::{
     error::*,
     model::{self, JwtRefreshStorageColumn, JwtStorageColumn, PasswordResetTokensColumn},
     sql_backend_handler::SqlBackendHandler,
-    types::UserId,
 };
 use async_trait::async_trait;
 use chrono::NaiveDateTime;
+use lldap_domain::types::UserId;
 use sea_orm::{
     sea_query::{Cond, Expr},
     ActiveModelTrait, ColumnTrait, EntityTrait, IntoActiveModel, QueryFilter, QuerySelect,
diff --git a/server/src/infra/tcp_backend_handler.rs b/server/src/infra/tcp_backend_handler.rs
index 58299c1..c185b5f 100644
--- a/server/src/infra/tcp_backend_handler.rs
+++ b/server/src/infra/tcp_backend_handler.rs
@@ -2,7 +2,8 @@ use async_trait::async_trait;
 use chrono::NaiveDateTime;
 use std::collections::HashSet;
 
-use crate::domain::{error::Result, types::UserId};
+use crate::domain::error::Result;
+use lldap_domain::types::UserId;
 
 #[async_trait]
 pub trait TcpBackendHandler: Sync {
diff --git a/server/src/infra/test_utils.rs b/server/src/infra/test_utils.rs
index b908111..6d5b588 100644
--- a/server/src/infra/test_utils.rs
+++ b/server/src/infra/test_utils.rs
@@ -1,4 +1,12 @@
-use crate::domain::{error::Result, handler::*, opaque_handler::*, types::*};
+use crate::domain::{error::Result, handler::*, opaque_handler::*};
+use lldap_domain::{
+    requests::{
+        CreateAttributeRequest, CreateGroupRequest, CreateUserRequest, UpdateGroupRequest,
+        UpdateUserRequest,
+    },
+    schema::{AttributeList, AttributeSchema, Schema},
+    types::*,
+};
 
 use async_trait::async_trait;
 use std::collections::HashSet;
diff --git a/server/src/main.rs b/server/src/main.rs
index 05fb397..84d43f2 100644
--- a/server/src/main.rs
+++ b/server/src/main.rs
@@ -8,8 +8,8 @@ use std::time::Duration;
 use crate::{
     domain::{
         handler::{
-            CreateGroupRequest, CreateUserRequest, GroupBackendHandler, GroupListerBackendHandler,
-            GroupRequestFilter, UserBackendHandler, UserListerBackendHandler, UserRequestFilter,
+            GroupBackendHandler, GroupListerBackendHandler, GroupRequestFilter, UserBackendHandler,
+            UserListerBackendHandler, UserRequestFilter,
         },
         sql_backend_handler::SqlBackendHandler,
         sql_opaque_handler::register_password,
@@ -30,6 +30,8 @@ use futures_util::TryFutureExt;
 use sea_orm::{Database, DatabaseConnection};
 use tracing::{debug, error, info, instrument, span, warn, Instrument, Level};
 
+use lldap_domain::requests::{CreateGroupRequest, CreateUserRequest};
+
 mod domain;
 mod infra;