diff --git a/selfprivacy_api/services/bitwarden/__init__.py b/selfprivacy_api/services/bitwarden/__init__.py
index addf928..53c7649 100644
--- a/selfprivacy_api/services/bitwarden/__init__.py
+++ b/selfprivacy_api/services/bitwarden/__init__.py
@@ -6,11 +6,42 @@ from typing import List
 from selfprivacy_api.utils.systemd import get_service_status
 from selfprivacy_api.services.service import Service, ServiceStatus
 from selfprivacy_api.services.bitwarden.icon import BITWARDEN_ICON
+from selfprivacy_api.services.config_item import (
+    StringServiceConfigItem,
+    BoolServiceConfigItem,
+    ServiceConfigItem,
+)
+from selfprivacy_api.utils.regex_strings import SUBDOMAIN_REGEX
 
 
 class Bitwarden(Service):
     """Class representing Bitwarden service."""
 
+    config_items: dict[str, ServiceConfigItem] = {
+        "subdomain": StringServiceConfigItem(
+            id="subdomain",
+            default_value="password",
+            description="Subdomain",
+            regex=SUBDOMAIN_REGEX,
+            widget="subdomain",
+        ),
+        "signupsAllowed": BoolServiceConfigItem(
+            id="signupsAllowed",
+            default_value=True,
+            description="Allow new user signups",
+        ),
+        "sendsAllowed": BoolServiceConfigItem(
+            id="sendsAllowed",
+            default_value=True,
+            description="Allow users to use Bitwarden Send",
+        ),
+        "emergencyAccessAllowed": BoolServiceConfigItem(
+            id="emergencyAccessAllowed",
+            default_value=True,
+            description="Allow users to enable Emergency Access",
+        ),
+    }
+
     @staticmethod
     def get_id() -> str:
         """Return service id."""
diff --git a/selfprivacy_api/services/forgejo/__init__.py b/selfprivacy_api/services/forgejo/__init__.py
index d882771..a5b07b0 100644
--- a/selfprivacy_api/services/forgejo/__init__.py
+++ b/selfprivacy_api/services/forgejo/__init__.py
@@ -127,33 +127,6 @@ class Forgejo(Service):
     def restart():
         subprocess.run(["systemctl", "restart", "forgejo.service"])
 
-    @classmethod
-    def get_configuration(cls):
-        with ReadUserData() as user_data:
-            return {
-                key: cls.config_items[key].as_dict(
-                    user_data.get("modules", {}).get(cls.get_id(), {})
-                )
-                for key in cls.config_items
-            }
-
-    @classmethod
-    def set_configuration(cls, config_items):
-        # First, validate the configuration
-        for key, value in config_items.items():
-            if cls.config_items[key].validate_value(value) is False:
-                raise ValueError(f"Value {value} is not valid for {key}")
-        with WriteUserData() as user_data:
-            if "modules" not in user_data:
-                user_data["modules"] = {}
-            if cls.get_id() not in user_data["modules"]:
-                user_data["modules"][cls.get_id()] = {}
-            for key, value in config_items.items():
-                cls.config_items[key].set_value(
-                    value,
-                    user_data["modules"][cls.get_id()],
-                )
-
     @staticmethod
     def get_logs():
         return ""
diff --git a/selfprivacy_api/services/jitsimeet/__init__.py b/selfprivacy_api/services/jitsimeet/__init__.py
index 08462e0..81fd5ac 100644
--- a/selfprivacy_api/services/jitsimeet/__init__.py
+++ b/selfprivacy_api/services/jitsimeet/__init__.py
@@ -10,11 +10,31 @@ from selfprivacy_api.utils.systemd import (
 from selfprivacy_api.services.service import Service, ServiceStatus
 from selfprivacy_api.utils.block_devices import BlockDevice
 from selfprivacy_api.services.jitsimeet.icon import JITSI_ICON
+from selfprivacy_api.services.config_item import (
+    StringServiceConfigItem,
+    ServiceConfigItem,
+)
+from selfprivacy_api.utils.regex_strings import SUBDOMAIN_REGEX
 
 
 class JitsiMeet(Service):
     """Class representing Jitsi service"""
 
+    config_items: dict[str, ServiceConfigItem] = {
+        "subdomain": StringServiceConfigItem(
+            id="subdomain",
+            default_value="meet",
+            description="Subdomain",
+            regex=SUBDOMAIN_REGEX,
+            widget="subdomain",
+        ),
+        "appName": StringServiceConfigItem(
+            id="appName",
+            default_value="Jitsi Meet",
+            description="The name displayed in the web interface",
+        ),
+    }
+
     @staticmethod
     def get_id() -> str:
         """Return service id."""
diff --git a/selfprivacy_api/services/nextcloud/__init__.py b/selfprivacy_api/services/nextcloud/__init__.py
index 14ea078..ec1546d 100644
--- a/selfprivacy_api/services/nextcloud/__init__.py
+++ b/selfprivacy_api/services/nextcloud/__init__.py
@@ -7,11 +7,26 @@ from selfprivacy_api.utils.systemd import get_service_status
 from selfprivacy_api.services.service import Service, ServiceStatus
 
 from selfprivacy_api.services.nextcloud.icon import NEXTCLOUD_ICON
+from selfprivacy_api.services.config_item import (
+    StringServiceConfigItem,
+    ServiceConfigItem,
+)
+from selfprivacy_api.utils.regex_strings import SUBDOMAIN_REGEX
 
 
 class Nextcloud(Service):
     """Class representing Nextcloud service."""
 
+    config_items: dict[str, ServiceConfigItem] = {
+        "subdomain": StringServiceConfigItem(
+            id="subdomain",
+            default_value="cloud",
+            description="Subdomain",
+            regex=SUBDOMAIN_REGEX,
+            widget="subdomain",
+        ),
+    }
+
     @staticmethod
     def get_id() -> str:
         """Return service id."""
diff --git a/selfprivacy_api/services/roundcube/__init__.py b/selfprivacy_api/services/roundcube/__init__.py
index 2493c87..fac8d2d 100644
--- a/selfprivacy_api/services/roundcube/__init__.py
+++ b/selfprivacy_api/services/roundcube/__init__.py
@@ -11,11 +11,26 @@ from selfprivacy_api.utils.systemd import (
 from selfprivacy_api.services.service import Service, ServiceStatus
 from selfprivacy_api.utils.block_devices import BlockDevice
 from selfprivacy_api.services.roundcube.icon import ROUNDCUBE_ICON
+from selfprivacy_api.services.config_item import (
+    StringServiceConfigItem,
+    ServiceConfigItem,
+)
+from selfprivacy_api.utils.regex_strings import SUBDOMAIN_REGEX
 
 
 class Roundcube(Service):
     """Class representing roundcube service"""
 
+    config_items: dict[str, ServiceConfigItem] = {
+        "subdomain": StringServiceConfigItem(
+            id="subdomain",
+            default_value="cloud",
+            description="Subdomain",
+            regex=SUBDOMAIN_REGEX,
+            widget="subdomain",
+        ),
+    }
+
     @staticmethod
     def get_id() -> str:
         """Return service id."""
diff --git a/selfprivacy_api/services/service.py b/selfprivacy_api/services/service.py
index ba1ba10..6d6bd47 100644
--- a/selfprivacy_api/services/service.py
+++ b/selfprivacy_api/services/service.py
@@ -3,6 +3,7 @@ from abc import ABC, abstractmethod
 from typing import List, Optional
 
 from selfprivacy_api import utils
+from selfprivacy_api.services.config_item import ServiceConfigItem
 from selfprivacy_api.utils.default_subdomains import DEFAULT_SUBDOMAINS
 from selfprivacy_api.utils import ReadUserData, WriteUserData, get_domain
 from selfprivacy_api.utils.waitloop import wait_until_true
@@ -34,6 +35,8 @@ class Service(ABC):
     can be installed, configured and used by a user.
     """
 
+    config_items: dict[str, "ServiceConfigItem"] = {}
+
     @staticmethod
     @abstractmethod
     def get_id() -> str:
@@ -188,14 +191,32 @@ class Service(ABC):
         pass
 
     @classmethod
-    @abstractmethod
-    def get_configuration(cls) -> dict:
-        pass
+    def get_configuration(cls):
+        with ReadUserData() as user_data:
+            return {
+                key: cls.config_items[key].as_dict(
+                    user_data.get("modules", {}).get(cls.get_id(), {})
+                )
+                for key in cls.config_items
+            }
 
     @classmethod
-    @abstractmethod
     def set_configuration(cls, config_items):
-        pass
+        for key, value in config_items.items():
+            if key not in cls.config_items:
+                raise ValueError(f"Key {key} is not valid for {cls.get_id()}")
+            if cls.config_items[key].validate_value(value) is False:
+                raise ValueError(f"Value {value} is not valid for {key}")
+        with WriteUserData() as user_data:
+            if "modules" not in user_data:
+                user_data["modules"] = {}
+            if cls.get_id() not in user_data["modules"]:
+                user_data["modules"][cls.get_id()] = {}
+            for key, value in config_items.items():
+                cls.config_items[key].set_value(
+                    value,
+                    user_data["modules"][cls.get_id()],
+                )
 
     @staticmethod
     @abstractmethod