diff --git a/.github/deployment/self-host/compose.yaml b/.github/deployment/self-host/compose.yaml
index 1baa556f48..fa95f5bd32 100644
--- a/.github/deployment/self-host/compose.yaml
+++ b/.github/deployment/self-host/compose.yaml
@@ -27,9 +27,7 @@ services:
       - AFFINE_CONFIG_PATH=/root/.affine/config
       - REDIS_SERVER_HOST=redis
       - DATABASE_URL=postgres://affine:affine@postgres:5432/affine
-      - DISABLE_TELEMETRY=true
       - NODE_ENV=production
-      - SERVER_FLAVOR=selfhosted
       - AFFINE_ADMIN_EMAIL=${AFFINE_ADMIN_EMAIL}
       - AFFINE_ADMIN_PASSWORD=${AFFINE_ADMIN_PASSWORD}
   redis:
diff --git a/.github/helm/affine/charts/graphql/templates/deployment.yaml b/.github/helm/affine/charts/graphql/templates/deployment.yaml
index 4459bfeefa..8a4de5f5e3 100644
--- a/.github/helm/affine/charts/graphql/templates/deployment.yaml
+++ b/.github/helm/affine/charts/graphql/templates/deployment.yaml
@@ -39,6 +39,8 @@ spec:
             value: "--max-old-space-size=4096"
           - name: NO_COLOR
             value: "1"
+          - name: DEPLOYMENT_TYPE
+            value: "affine"
           - name: SERVER_FLAVOR
             value: "graphql"
           - name: AFFINE_ENV
diff --git a/.github/helm/affine/charts/sync/templates/deployment.yaml b/.github/helm/affine/charts/sync/templates/deployment.yaml
index f7e06cce7b..1952c8b8cf 100644
--- a/.github/helm/affine/charts/sync/templates/deployment.yaml
+++ b/.github/helm/affine/charts/sync/templates/deployment.yaml
@@ -36,6 +36,8 @@ spec:
             value: "{{ .Values.env }}"
           - name: NO_COLOR
             value: "1"
+          - name: DEPLOYMENT_TYPE
+            value: "affine"
           - name: SERVER_FLAVOR
             value: "sync"
           - name: NEXTAUTH_URL
diff --git a/.github/workflows/build-test.yml b/.github/workflows/build-test.yml
index 676b82b761..df596e5828 100644
--- a/.github/workflows/build-test.yml
+++ b/.github/workflows/build-test.yml
@@ -19,7 +19,7 @@ env:
   MACOSX_DEPLOYMENT_TARGET: '10.13'
   NX_CLOUD_ACCESS_TOKEN: ${{ secrets.NX_CLOUD_ACCESS_TOKEN }}
   PLAYWRIGHT_BROWSERS_PATH: ${{ github.workspace }}/node_modules/.cache/ms-playwright
-  DISABLE_TELEMETRY: true
+  DEPLOYMENT_TYPE: affine
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
@@ -291,6 +291,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: build-storage
     env:
+      NODE_ENV: test
       DISTRIBUTION: browser
     services:
       postgres:
diff --git a/packages/backend/server/package.json b/packages/backend/server/package.json
index 22b4a6fbe7..4fefebd0e7 100644
--- a/packages/backend/server/package.json
+++ b/packages/backend/server/package.json
@@ -162,7 +162,6 @@
     "env": {
       "TS_NODE_TRANSPILE_ONLY": true,
       "TS_NODE_PROJECT": "./tsconfig.json",
-      "NODE_ENV": "development",
       "DEBUG": "affine:*",
       "FORCE_COLOR": true,
       "DEBUG_COLORS": true
diff --git a/packages/backend/server/scripts/self-host-predeploy.js b/packages/backend/server/scripts/self-host-predeploy.js
index bcd618a80f..2e71f738d7 100644
--- a/packages/backend/server/scripts/self-host-predeploy.js
+++ b/packages/backend/server/scripts/self-host-predeploy.js
@@ -13,7 +13,10 @@ const configFiles = [
 ];
 
 function configCleaner(content) {
-  return content.replace(/(\/\/#.*$)|(\/\/\s+TODO.*$)/gm, '');
+  return content.replace(
+    /(^\/\/#.*$)|(^\/\/\s+TODO.*$)|("use\sstrict";?)|(^.*eslint-disable.*$)/gm,
+    ''
+  );
 }
 
 function prepare() {
diff --git a/packages/backend/server/src/app.controller.ts b/packages/backend/server/src/app.controller.ts
index 0e3a4abbf2..6a217ef3eb 100644
--- a/packages/backend/server/src/app.controller.ts
+++ b/packages/backend/server/src/app.controller.ts
@@ -11,6 +11,7 @@ export class AppController {
     return {
       compatibility: this.config.version,
       message: `AFFiNE ${this.config.version} Server`,
+      type: this.config.type,
       flavor: this.config.flavor,
     };
   }
diff --git a/packages/backend/server/src/app.module.ts b/packages/backend/server/src/app.module.ts
index f763a09286..8c243dd75c 100644
--- a/packages/backend/server/src/app.module.ts
+++ b/packages/backend/server/src/app.module.ts
@@ -109,7 +109,7 @@ export class AppModuleBuilder {
         },
       ],
       imports: this.modules,
-      controllers: this.config.flavor.selfhosted ? [] : [AppController],
+      controllers: this.config.isSelfhosted ? [] : [AppController],
     })
     class AppModule {}
 
@@ -132,9 +132,9 @@ function buildAppModule() {
     // sync server only
     .useIf(config => config.flavor.sync, SyncModule)
 
-    // main server only
+    // graphql server only
     .useIf(
-      config => config.flavor.main,
+      config => config.flavor.graphql,
       ServerConfigModule,
       WebSocketModule,
       GqlModule,
@@ -147,7 +147,7 @@ function buildAppModule() {
 
     // self hosted server only
     .useIf(
-      config => config.flavor.selfhosted,
+      config => config.isSelfhosted,
       ServeStaticModule.forRoot({
         rootPath: join('/app', 'static'),
       })
diff --git a/packages/backend/server/src/config/affine.env.ts b/packages/backend/server/src/config/affine.env.ts
index 16d5521bf2..452bc119d7 100644
--- a/packages/backend/server/src/config/affine.env.ts
+++ b/packages/backend/server/src/config/affine.env.ts
@@ -3,8 +3,7 @@ AFFiNE.ENV_MAP = {
   AFFINE_SERVER_PORT: ['port', 'int'],
   AFFINE_SERVER_HOST: 'host',
   AFFINE_SERVER_SUB_PATH: 'path',
-  AFFIHE_SERVER_HTTPS: ['https', 'boolean'],
-  AFFINE_ENV: 'affineEnv',
+  AFFINE_SERVER_HTTPS: ['https', 'boolean'],
   DATABASE_URL: 'db.url',
   ENABLE_CAPTCHA: ['auth.captcha.enable', 'boolean'],
   CAPTCHA_TURNSTILE_SECRET: ['auth.captcha.turnstile.secret', 'string'],
@@ -28,7 +27,7 @@ AFFiNE.ENV_MAP = {
   REDIS_SERVER_DATABASE: ['plugins.redis.db', 'int'],
   DOC_MERGE_INTERVAL: ['doc.manager.updatePollInterval', 'int'],
   DOC_MERGE_USE_JWST_CODEC: [
-    'doc.manager.experimentalMergeWithJwstCodec',
+    'doc.manager.experimentalMergeWithYOcto',
     'boolean',
   ],
   ENABLE_LOCAL_EMAIL: ['auth.localEmail', 'boolean'],
@@ -36,5 +35,3 @@ AFFiNE.ENV_MAP = {
   STRIPE_WEBHOOK_KEY: 'plugins.payment.stripe.keys.webhookKey',
   FEATURES_EARLY_ACCESS_PREVIEW: ['featureFlags.earlyAccessPreview', 'boolean'],
 };
-
-export default AFFiNE;
diff --git a/packages/backend/server/src/config/affine.self.ts b/packages/backend/server/src/config/affine.self.ts
new file mode 100644
index 0000000000..e877d1a220
--- /dev/null
+++ b/packages/backend/server/src/config/affine.self.ts
@@ -0,0 +1,46 @@
+/* eslint-disable @typescript-eslint/no-non-null-assertion */
+// Custom configurations for AFFiNE Cloud
+// ====================================================================================
+// Q: WHY THIS FILE EXISTS?
+// A: AFFiNE deployment environment may have a lot of custom environment variables,
+//    which are not suitable to be put in the `affine.ts` file.
+//    For example, AFFiNE Cloud Clusters are deployed on Google Cloud Platform.
+//    We need to enable the `gcloud` plugin to make sure the nodes working well,
+//    but the default selfhost version may not require it.
+//    So it's not a good idea to put such logic in the common `affine.ts` file.
+//
+//    ```
+//    if (AFFiNE.deploy) {
+//      AFFiNE.plugins.use('gcloud');
+//    }
+//    ```
+// ====================================================================================
+const env = process.env;
+
+AFFiNE.metrics.enabled = !AFFiNE.node.test;
+
+if (env.R2_OBJECT_STORAGE_ACCOUNT_ID) {
+  AFFiNE.storage.providers.r2 = {
+    accountId: env.R2_OBJECT_STORAGE_ACCOUNT_ID,
+    credentials: {
+      accessKeyId: env.R2_OBJECT_STORAGE_ACCESS_KEY_ID!,
+      secretAccessKey: env.R2_OBJECT_STORAGE_SECRET_ACCESS_KEY!,
+    },
+  };
+  AFFiNE.storage.storages.avatar.provider = 'r2';
+  AFFiNE.storage.storages.avatar.bucket = 'account-avatar';
+  AFFiNE.storage.storages.avatar.publicLinkFactory = key =>
+    `https://avatar.affineassets.com/${key}`;
+
+  AFFiNE.storage.storages.blob.provider = 'r2';
+  AFFiNE.storage.storages.blob.bucket = `workspace-blobs-${
+    AFFiNE.affine.canary ? 'canary' : 'prod'
+  }`;
+}
+
+AFFiNE.plugins.use('redis');
+AFFiNE.plugins.use('payment');
+
+if (AFFiNE.deploy) {
+  AFFiNE.plugins.use('gcloud');
+}
diff --git a/packages/backend/server/src/config/affine.ts b/packages/backend/server/src/config/affine.ts
index 3ff3211b28..74536d8d9f 100644
--- a/packages/backend/server/src/config/affine.ts
+++ b/packages/backend/server/src/config/affine.ts
@@ -1,39 +1,94 @@
 /* eslint-disable @typescript-eslint/no-non-null-assertion */
-// Custom configurations
-const env = process.env;
-
-// TODO(@forehalo): detail explained
-// Storage
-if (env.R2_OBJECT_STORAGE_ACCOUNT_ID) {
-  AFFiNE.storage.providers.r2 = {
-    accountId: env.R2_OBJECT_STORAGE_ACCOUNT_ID,
-    credentials: {
-      accessKeyId: env.R2_OBJECT_STORAGE_ACCESS_KEY_ID!,
-      secretAccessKey: env.R2_OBJECT_STORAGE_SECRET_ACCESS_KEY!,
-    },
-  };
-  AFFiNE.storage.storages.avatar.provider = 'r2';
-  AFFiNE.storage.storages.avatar.bucket = 'account-avatar';
-  AFFiNE.storage.storages.avatar.publicLinkFactory = key =>
-    `https://avatar.affineassets.com/${key}`;
-
-  AFFiNE.storage.storages.blob.provider = 'r2';
-  AFFiNE.storage.storages.blob.bucket = `workspace-blobs-${
-    AFFiNE.affine.canary ? 'canary' : 'prod'
-  }`;
-}
-
-// Metrics
-AFFiNE.metrics.enabled = true;
-
-// Plugins Section Start
-AFFiNE.plugins.use('payment', {
-  stripe: {
-    keys: {},
-    apiVersion: '2023-10-16',
-  },
+//
+// ###############################################################
+// ##                AFFiNE Configuration System                ##
+// ###############################################################
+// Here is the file of all AFFiNE configurations that will affect runtime behavior.
+// Override any configuration here and it will be merged when starting the server.
+// Any changes in this file won't take effect before server restarted.
+//
+//
+// > Configurations merge order
+//   1. load environment variables (`.env` if provided, and from system)
+//   2. load `src/fundamentals/config/default.ts` for all default settings
+//   3. apply `./affine.env.ts` patches
+//   4. apply `./affine.ts` patches (this file)
+//
+//
+// ###############################################################
+// ##                       General settings                    ##
+// ###############################################################
+//
+// /* The unique identity of the server */
+// AFFiNE.serverId = 'some-randome-uuid';
+//
+// /* The name of AFFiNE Server, may show on the UI */
+// AFFiNE.serverName = 'Your Cool AFFiNE Selfhosted Cloud';
+//
+// /* Whether the server is deployed behind a HTTPS proxied environment */
+AFFiNE.https = false;
+// /* Domain of your server that your server will be available at */
+AFFiNE.host = 'localhost';
+// /* The local port of your server that will listen on */
+AFFiNE.port = 3010;
+// /* The sub path of your server */
+// /* For example, if you set `AFFiNE.path = '/affine'`, then the server will be available at `${domain}/affine` */
+// AFFiNE.path = '/affine';
+//
+//
+// ###############################################################
+// ##                       Database settings                   ##
+// ###############################################################
+//
+// /* The URL of the database where most of AFFiNE server data will be stored in */
+// AFFiNE.db.url = 'postgres://user:passsword@localhost:5432/affine';
+//
+//
+// ###############################################################
+// ##                   Server Function settings                ##
+// ###############################################################
+//
+// /* Whether enable metrics and tracing while running the server */
+// /* The metrics will be available at `http://localhost:9464/metrics` with [Prometheus] format exported */
+// AFFiNE.metrics.enabled = true;
+//
+// /* GraphQL configurations that control the behavior of the Apollo Server behind */
+// /* @see https://www.apollographql.com/docs/apollo-server/api/apollo-server */
+// AFFiNE.graphql = {
+//   /* Path to mount GraphQL API */
+//   path: '/graphql',
+//   buildSchemaOptions: {
+//     numberScalarMode: 'integer',
+//   },
+//   /* Whether allow client to query the schema introspection */
+//   introspection: true,
+//   /* Whether enable GraphQL Playground UI */
+//   playground: true,
+// }
+//
+// /* Doc Store & Collaberation */
+// /* How long the buffer time of creating a new history snapshot when doc get updated */
+// AFFiNE.doc.history.interval = 1000 * 60 * 10; // 10 minutes
+//
+// /* Use `y-octo` to merge updates at the same time when merging using Yjs */
+// AFFiNE.doc.manager.experimentalMergeWithYOcto = true;
+//
+// /* How often the manager will start a new turn of merging pending updates into doc snapshot */
+// AFFiNE.doc.manager.updatePollInterval = 1000 * 3;
+//
+//
+// ###############################################################
+// ##                        Plugins settings                   ##
+// ###############################################################
+//
+// /* Redis Plugin */
+// /* Provide caching and session storing backed by Redis. */
+// /* Useful when you deploy AFFiNE server in a cluster. */
+AFFiNE.plugins.use('redis', {
+  /* override options */
 });
-AFFiNE.plugins.use('redis');
-// Plugins Section end
-
-export default AFFiNE;
+// /* Payment Plugin */
+AFFiNE.plugins.use('payment', {
+  stripe: { keys: {}, apiVersion: '2023-10-16' },
+});
+//
diff --git a/packages/backend/server/src/core/auth/service.ts b/packages/backend/server/src/core/auth/service.ts
index 75d9890bde..26f863d1f7 100644
--- a/packages/backend/server/src/core/auth/service.ts
+++ b/packages/backend/server/src/core/auth/service.ts
@@ -136,7 +136,7 @@ export class AuthService {
     return (
       !!outcome.success &&
       // skip hostname check in dev mode
-      (this.config.affineEnv === 'dev' || outcome.hostname === this.config.host)
+      (this.config.node.dev || outcome.hostname === this.config.host)
     );
   }
 
diff --git a/packages/backend/server/src/core/config.ts b/packages/backend/server/src/core/config.ts
index 45dfe2462e..c6e7549058 100644
--- a/packages/backend/server/src/core/config.ts
+++ b/packages/backend/server/src/core/config.ts
@@ -1,6 +1,8 @@
 import { Module } from '@nestjs/common';
 import { Field, ObjectType, Query, registerEnumType } from '@nestjs/graphql';
 
+import { DeploymentType } from '../fundamentals';
+
 export enum ServerFeature {
   Payment = 'payment',
 }
@@ -9,6 +11,10 @@ registerEnumType(ServerFeature, {
   name: 'ServerFeature',
 });
 
+registerEnumType(DeploymentType, {
+  name: 'ServerDeploymentType',
+});
+
 const ENABLED_FEATURES: ServerFeature[] = [];
 export function ADD_ENABLED_FEATURES(feature: ServerFeature) {
   ENABLED_FEATURES.push(feature);
@@ -28,6 +34,9 @@ export class ServerConfigType {
   @Field({ description: 'server base url' })
   baseUrl!: string;
 
+  @Field(() => DeploymentType, { description: 'server type' })
+  type!: DeploymentType;
+
   /**
    * @deprecated
    */
@@ -46,7 +55,11 @@ export class ServerConfigResolver {
       name: AFFiNE.serverName,
       version: AFFiNE.version,
       baseUrl: AFFiNE.baseUrl,
-      flavor: AFFiNE.flavor.type,
+      type: AFFiNE.type,
+      // BACKWARD COMPATIBILITY
+      // the old flavors contains `selfhosted` but it actually not flavor but deployment type
+      // this field should be removed after frontend feature flags implemented
+      flavor: AFFiNE.type,
       features: ENABLED_FEATURES,
     };
   }
diff --git a/packages/backend/server/src/core/doc/manager.ts b/packages/backend/server/src/core/doc/manager.ts
index 74daacd3df..5034d81537 100644
--- a/packages/backend/server/src/core/doc/manager.ts
+++ b/packages/backend/server/src/core/doc/manager.ts
@@ -125,11 +125,7 @@ export class DocManager implements OnModuleInit, OnModuleDestroy {
     const doc = await this.recoverDoc(...updates);
 
     // test jwst codec
-    if (
-      this.config.affine.canary &&
-      this.config.doc.manager.experimentalMergeWithJwstCodec &&
-      updates.length < 100 /* avoid overloading */
-    ) {
+    if (this.config.doc.manager.experimentalMergeWithYOcto) {
       metrics.jwst.counter('codec_merge_counter').add(1);
       const yjsResult = Buffer.from(encodeStateAsUpdate(doc));
       let log = false;
@@ -180,7 +176,7 @@ export class DocManager implements OnModuleInit, OnModuleDestroy {
     }, this.config.doc.manager.updatePollInterval);
 
     this.logger.log('Automation started');
-    if (this.config.doc.manager.experimentalMergeWithJwstCodec) {
+    if (this.config.doc.manager.experimentalMergeWithYOcto) {
       this.logger.warn(
         'Experimental feature enabled: merge updates with jwst codec is enabled'
       );
diff --git a/packages/backend/server/src/data/migrations/1605053000403-self-host-admin.ts b/packages/backend/server/src/data/migrations/1605053000403-self-host-admin.ts
index 17b8ebb720..c0bd3493fd 100644
--- a/packages/backend/server/src/data/migrations/1605053000403-self-host-admin.ts
+++ b/packages/backend/server/src/data/migrations/1605053000403-self-host-admin.ts
@@ -8,7 +8,7 @@ export class SelfHostAdmin1605053000403 {
   // do the migration
   static async up(db: PrismaClient, ref: ModuleRef) {
     const config = ref.get(Config, { strict: false });
-    if (config.flavor.selfhosted) {
+    if (config.isSelfhosted) {
       if (
         !process.env.AFFINE_ADMIN_EMAIL ||
         !process.env.AFFINE_ADMIN_PASSWORD
diff --git a/packages/backend/server/src/fundamentals/config/def.ts b/packages/backend/server/src/fundamentals/config/def.ts
index 21e1c7e33e..cdfa6155d1 100644
--- a/packages/backend/server/src/fundamentals/config/def.ts
+++ b/packages/backend/server/src/fundamentals/config/def.ts
@@ -18,18 +18,22 @@ export enum ExternalAccount {
   firebase = 'firebase',
 }
 
-export type ServerFlavor =
-  | 'allinone'
-  | 'main'
-  // @deprecated
-  | 'graphql'
-  | 'sync'
-  | 'selfhosted';
+export type ServerFlavor = 'allinone' | 'graphql' | 'sync';
+export type AFFINE_ENV = 'dev' | 'beta' | 'production';
+export type NODE_ENV = 'development' | 'test' | 'production';
+
+export enum DeploymentType {
+  Affine = 'affine',
+  Selfhosted = 'selfhosted',
+}
+
 export type ConfigPaths = LeafPaths<
   Omit<
     AFFiNEConfig,
     | 'ENV_MAP'
     | 'version'
+    | 'type'
+    | 'isSelfhosted'
     | 'flavor'
     | 'env'
     | 'affine'
@@ -63,27 +67,36 @@ export interface AFFiNEConfig {
    */
   readonly version: string;
 
+  /**
+   * Deployment type, AFFiNE Cloud, or Selfhosted
+   */
+  get type(): DeploymentType;
+
+  /**
+   * Fast detect whether currently deployed in a selfhosted environment
+   */
+  get isSelfhosted(): boolean;
+
   /**
    * Server flavor
    */
   get flavor(): {
     type: string;
-    main: boolean;
+    graphql: boolean;
     sync: boolean;
-    selfhosted: boolean;
   };
 
   /**
    * Deployment environment
    */
-  readonly affineEnv: 'dev' | 'beta' | 'production';
+  readonly AFFINE_ENV: AFFINE_ENV;
   /**
    * alias to `process.env.NODE_ENV`
    *
-   * @default 'production'
+   * @default 'development'
    * @env NODE_ENV
    */
-  readonly env: string;
+  readonly NODE_ENV: NODE_ENV;
 
   /**
    * fast AFFiNE environment judge
@@ -101,6 +114,7 @@ export interface AFFiNEConfig {
     dev: boolean;
     test: boolean;
   };
+
   get deploy(): boolean;
 
   /**
@@ -302,11 +316,11 @@ export interface AFFiNEConfig {
       updatePollInterval: number;
 
       /**
-       * Use JwstCodec to merge updates at the same time when merging using Yjs.
+       * Use `y-octo` to merge updates at the same time when merging using Yjs.
        *
        * This is an experimental feature, and aimed to check the correctness of JwstCodec.
        */
-      experimentalMergeWithJwstCodec: boolean;
+      experimentalMergeWithYOcto: boolean;
     };
     history: {
       /**
diff --git a/packages/backend/server/src/fundamentals/config/default.ts b/packages/backend/server/src/fundamentals/config/default.ts
index c5b90c229a..f7712629f0 100644
--- a/packages/backend/server/src/fundamentals/config/default.ts
+++ b/packages/backend/server/src/fundamentals/config/default.ts
@@ -6,7 +6,14 @@ import { merge } from 'lodash-es';
 import parse from 'parse-duration';
 
 import pkg from '../../../package.json' assert { type: 'json' };
-import type { AFFiNEConfig, ServerFlavor } from './def';
+import {
+  type AFFINE_ENV,
+  AFFiNEConfig,
+  DeploymentType,
+  type NODE_ENV,
+  type ServerFlavor,
+} from './def';
+import { readEnv } from './env';
 import { getDefaultAFFiNEStorageConfig } from './storage';
 
 // Don't use this in production
@@ -46,40 +53,62 @@ const jwtKeyPair = (function () {
 })();
 
 export const getDefaultAFFiNEConfig: () => AFFiNEConfig = () => {
-  let isHttps: boolean | null = null;
-  let flavor = (process.env.SERVER_FLAVOR ?? 'allinone') as ServerFlavor;
+  const NODE_ENV = readEnv<NODE_ENV>('NODE_ENV', 'development', [
+    'development',
+    'test',
+    'production',
+  ]);
+  const AFFINE_ENV = readEnv<AFFINE_ENV>('AFFINE_ENV', 'dev', [
+    'dev',
+    'beta',
+    'production',
+  ]);
+  const flavor = readEnv<ServerFlavor>('SERVER_FLAVOR', 'allinone', [
+    'allinone',
+    'graphql',
+    'sync',
+  ]);
+  const deploymentType = readEnv<DeploymentType>(
+    'DEPLOYMENT_TYPE',
+    NODE_ENV === 'development'
+      ? DeploymentType.Affine
+      : DeploymentType.Selfhosted,
+    Object.values(DeploymentType)
+  );
+  const isSelfhosted = deploymentType === DeploymentType.Selfhosted;
+
   const defaultConfig = {
     serverId: 'affine-nestjs-server',
-    serverName: flavor === 'selfhosted' ? 'Self-Host Cloud' : 'AFFiNE Cloud',
+    serverName: isSelfhosted ? 'Self-Host Cloud' : 'AFFiNE Cloud',
     version: pkg.version,
+    get type() {
+      return deploymentType;
+    },
+    get isSelfhosted() {
+      return isSelfhosted;
+    },
     get flavor() {
-      if (flavor === 'graphql') {
-        flavor = 'main';
-      }
       return {
         type: flavor,
-        main: flavor === 'main' || flavor === 'allinone',
+        graphql: flavor === 'graphql' || flavor === 'allinone',
         sync: flavor === 'sync' || flavor === 'allinone',
-        selfhosted: flavor === 'selfhosted',
       };
     },
     ENV_MAP: {},
-    affineEnv: 'dev',
+    AFFINE_ENV,
     get affine() {
-      const env = this.affineEnv;
       return {
-        canary: env === 'dev',
-        beta: env === 'beta',
-        stable: env === 'production',
+        canary: AFFINE_ENV === 'dev',
+        beta: AFFINE_ENV === 'beta',
+        stable: AFFINE_ENV === 'production',
       };
     },
-    env: process.env.NODE_ENV ?? 'development',
+    NODE_ENV,
     get node() {
-      const env = this.env;
       return {
-        prod: env === 'production',
-        dev: env === 'development',
-        test: env === 'test',
+        prod: NODE_ENV === 'production',
+        dev: NODE_ENV === 'development',
+        test: NODE_ENV === 'test',
       };
     },
     get deploy() {
@@ -88,12 +117,7 @@ export const getDefaultAFFiNEConfig: () => AFFiNEConfig = () => {
     featureFlags: {
       earlyAccessPreview: false,
     },
-    get https() {
-      return isHttps ?? !this.node.dev;
-    },
-    set https(value: boolean) {
-      isHttps = value;
-    },
+    https: false,
     host: 'localhost',
     port: 3010,
     path: '',
@@ -160,7 +184,7 @@ export const getDefaultAFFiNEConfig: () => AFFiNEConfig = () => {
       manager: {
         enableUpdateAutoMerging: flavor !== 'sync',
         updatePollInterval: 3000,
-        experimentalMergeWithJwstCodec: false,
+        experimentalMergeWithYOcto: false,
       },
       history: {
         interval: 1000 * 60 * 10 /* 10 mins */,
diff --git a/packages/backend/server/src/fundamentals/config/env.ts b/packages/backend/server/src/fundamentals/config/env.ts
index 50554bc462..21c16c4738 100644
--- a/packages/backend/server/src/fundamentals/config/env.ts
+++ b/packages/backend/server/src/fundamentals/config/env.ts
@@ -48,3 +48,24 @@ export function applyEnvToConfig(rawConfig: AFFiNEConfig) {
     }
   }
 }
+
+export function readEnv<T>(
+  env: string,
+  defaultValue: T,
+  availableValues?: T[]
+) {
+  const value = process.env[env];
+  if (value === undefined) {
+    return defaultValue;
+  }
+
+  if (availableValues && !availableValues.includes(value as any)) {
+    throw new Error(
+      `Invalid value '${value}' for environment variable ${env}, expected one of [${availableValues.join(
+        ', '
+      )}]`
+    );
+  }
+
+  return value as T;
+}
diff --git a/packages/backend/server/src/fundamentals/index.ts b/packages/backend/server/src/fundamentals/index.ts
index 35fc1db0c5..9b77c08e08 100644
--- a/packages/backend/server/src/fundamentals/index.ts
+++ b/packages/backend/server/src/fundamentals/index.ts
@@ -9,6 +9,7 @@ export {
   applyEnvToConfig,
   Config,
   type ConfigPaths,
+  DeploymentType,
   getDefaultAFFiNEStorageConfig,
 } from './config';
 export * from './error';
diff --git a/packages/backend/server/src/fundamentals/metrics/index.ts b/packages/backend/server/src/fundamentals/metrics/index.ts
index dc2b481daa..9685b58d49 100644
--- a/packages/backend/server/src/fundamentals/metrics/index.ts
+++ b/packages/backend/server/src/fundamentals/metrics/index.ts
@@ -1,28 +1,48 @@
-import { Global, Module, OnModuleDestroy, OnModuleInit } from '@nestjs/common';
+import {
+  Global,
+  Module,
+  OnModuleDestroy,
+  OnModuleInit,
+  Provider,
+} from '@nestjs/common';
+import { ModuleRef } from '@nestjs/core';
 import { NodeSDK } from '@opentelemetry/sdk-node';
 
-import { Config, parseEnvValue } from '../config';
-import { createSDK, registerCustomMetrics } from './opentelemetry';
+import { Config } from '../config';
+import {
+  LocalOpentelemetryFactory,
+  OpentelemetryFactory,
+  registerCustomMetrics,
+} from './opentelemetry';
+
+const factorProvider: Provider = {
+  provide: OpentelemetryFactory,
+  useFactory: (config: Config) => {
+    return config.metrics.enabled ? new LocalOpentelemetryFactory() : null;
+  },
+  inject: [Config],
+};
 
 @Global()
-@Module({})
+@Module({
+  providers: [factorProvider],
+  exports: [factorProvider],
+})
 export class MetricsModule implements OnModuleInit, OnModuleDestroy {
   private sdk: NodeSDK | null = null;
-  constructor(private readonly config: Config) {}
+  constructor(private readonly ref: ModuleRef) {}
 
   onModuleInit() {
-    if (
-      this.config.metrics.enabled &&
-      !parseEnvValue(process.env.DISABLE_TELEMETRY, 'boolean')
-    ) {
-      this.sdk = createSDK();
+    const factor = this.ref.get(OpentelemetryFactory, { strict: false });
+    if (factor) {
+      this.sdk = factor.create();
       this.sdk.start();
       registerCustomMetrics();
     }
   }
 
   async onModuleDestroy() {
-    if (this.config.metrics.enabled && this.sdk) {
+    if (this.sdk) {
       await this.sdk.shutdown();
     }
   }
@@ -30,3 +50,4 @@ export class MetricsModule implements OnModuleInit, OnModuleDestroy {
 
 export * from './metrics';
 export * from './utils';
+export { OpentelemetryFactory };
diff --git a/packages/backend/server/src/fundamentals/metrics/opentelemetry.ts b/packages/backend/server/src/fundamentals/metrics/opentelemetry.ts
index c7457276c2..64bc9b1b94 100644
--- a/packages/backend/server/src/fundamentals/metrics/opentelemetry.ts
+++ b/packages/backend/server/src/fundamentals/metrics/opentelemetry.ts
@@ -1,6 +1,4 @@
-import { MetricExporter } from '@google-cloud/opentelemetry-cloud-monitoring-exporter';
-import { TraceExporter } from '@google-cloud/opentelemetry-cloud-trace-exporter';
-import { GcpDetectorSync } from '@google-cloud/opentelemetry-resource-util';
+import { OnModuleDestroy } from '@nestjs/common';
 import { metrics } from '@opentelemetry/api';
 import {
   CompositePropagator,
@@ -18,16 +16,13 @@ import { NestInstrumentation } from '@opentelemetry/instrumentation-nestjs-core'
 import { SocketIoInstrumentation } from '@opentelemetry/instrumentation-socket.io';
 import { Resource } from '@opentelemetry/resources';
 import {
-  ConsoleMetricExporter,
   type MeterProvider,
   MetricProducer,
   MetricReader,
-  PeriodicExportingMetricReader,
 } from '@opentelemetry/sdk-metrics';
 import { NodeSDK } from '@opentelemetry/sdk-node';
 import {
   BatchSpanProcessor,
-  ConsoleSpanExporter,
   SpanExporter,
   TraceIdRatioBasedSampler,
 } from '@opentelemetry/sdk-trace-node';
@@ -38,7 +33,7 @@ import { PrismaMetricProducer } from './prisma';
 
 const { PrismaInstrumentation } = prismaInstrument;
 
-abstract class OpentelemetryFactor {
+export abstract class OpentelemetryFactory {
   abstract getMetricReader(): MetricReader;
   abstract getSpanExporter(): SpanExporter;
 
@@ -59,7 +54,7 @@ abstract class OpentelemetryFactor {
 
   getResource() {
     return new Resource({
-      [SemanticResourceAttributes.K8S_NAMESPACE_NAME]: AFFiNE.affineEnv,
+      [SemanticResourceAttributes.K8S_NAMESPACE_NAME]: AFFiNE.AFFINE_ENV,
       [SemanticResourceAttributes.SERVICE_NAME]: AFFiNE.flavor.type,
       [SemanticResourceAttributes.SERVICE_VERSION]: AFFiNE.version,
     });
@@ -85,32 +80,20 @@ abstract class OpentelemetryFactor {
   }
 }
 
-class GCloudOpentelemetryFactor extends OpentelemetryFactor {
-  override getResource(): Resource {
-    return super.getResource().merge(new GcpDetectorSync().detect());
+export class LocalOpentelemetryFactory
+  extends OpentelemetryFactory
+  implements OnModuleDestroy
+{
+  private readonly metricsExporter = new PrometheusExporter({
+    metricProducers: this.getMetricsProducers(),
+  });
+
+  async onModuleDestroy() {
+    await this.metricsExporter.shutdown();
   }
 
   override getMetricReader(): MetricReader {
-    return new PeriodicExportingMetricReader({
-      exportIntervalMillis: 30000,
-      exportTimeoutMillis: 10000,
-      exporter: new MetricExporter({
-        prefix: 'custom.googleapis.com',
-      }),
-      metricProducers: this.getMetricsProducers(),
-    });
-  }
-
-  override getSpanExporter(): SpanExporter {
-    return new TraceExporter();
-  }
-}
-
-class LocalOpentelemetryFactor extends OpentelemetryFactor {
-  override getMetricReader(): MetricReader {
-    return new PrometheusExporter({
-      metricProducers: this.getMetricsProducers(),
-    });
+    return this.metricsExporter;
   }
 
   override getSpanExporter(): SpanExporter {
@@ -118,33 +101,6 @@ class LocalOpentelemetryFactor extends OpentelemetryFactor {
   }
 }
 
-class DebugOpentelemetryFactor extends OpentelemetryFactor {
-  override getMetricReader(): MetricReader {
-    return new PeriodicExportingMetricReader({
-      exporter: new ConsoleMetricExporter(),
-      metricProducers: this.getMetricsProducers(),
-    });
-  }
-
-  override getSpanExporter(): SpanExporter {
-    return new ConsoleSpanExporter();
-  }
-}
-
-// TODO(@forehalo): make it configurable
-export function createSDK() {
-  let factor: OpentelemetryFactor | null = null;
-  if (process.env.NODE_ENV === 'production') {
-    factor = new GCloudOpentelemetryFactor();
-  } else if (process.env.DEBUG_METRICS) {
-    factor = new DebugOpentelemetryFactor();
-  } else {
-    factor = new LocalOpentelemetryFactor();
-  }
-
-  return factor?.create();
-}
-
 function getMeterProvider() {
   return metrics.getMeterProvider();
 }
diff --git a/packages/backend/server/src/index.ts b/packages/backend/server/src/index.ts
index 19a01d349d..1b13da97a0 100644
--- a/packages/backend/server/src/index.ts
+++ b/packages/backend/server/src/index.ts
@@ -1,14 +1,16 @@
 /// <reference types="./global.d.ts" />
-// keep the config import at the top
-// eslint-disable-next-line simple-import-sort/imports
 import './prelude';
+
+import { Logger } from '@nestjs/common';
+
 import { createApp } from './app';
 
 const app = await createApp();
 const listeningHost = AFFiNE.deploy ? '0.0.0.0' : 'localhost';
 await app.listen(AFFiNE.port, listeningHost);
 
-console.log(
-  `AFFiNE Server has been started on http://${listeningHost}:${AFFiNE.port}.`
-);
-console.log(`And the public server should be recognized as ${AFFiNE.baseUrl}`);
+const logger = new Logger('App');
+
+logger.log(`AFFiNE Server is running in [${AFFiNE.type}] mode`);
+logger.log(`Listening on http://${listeningHost}:${AFFiNE.port}`);
+logger.log(`And the public server should be recognized as ${AFFiNE.baseUrl}`);
diff --git a/packages/backend/server/src/plugins/config.ts b/packages/backend/server/src/plugins/config.ts
index 9d077ebff0..7f5acb1704 100644
--- a/packages/backend/server/src/plugins/config.ts
+++ b/packages/backend/server/src/plugins/config.ts
@@ -1,3 +1,4 @@
+import { GCloudConfig } from './gcloud/config';
 import { PaymentConfig } from './payment';
 import { RedisOptions } from './redis';
 
@@ -5,6 +6,7 @@ declare module '../fundamentals/config' {
   interface PluginsConfig {
     readonly payment: PaymentConfig;
     readonly redis: RedisOptions;
+    readonly gcloud: GCloudConfig;
   }
 
   export type AvailablePlugins = keyof PluginsConfig;
diff --git a/packages/backend/server/src/plugins/gcloud/config.ts b/packages/backend/server/src/plugins/gcloud/config.ts
new file mode 100644
index 0000000000..9bca1ceeb1
--- /dev/null
+++ b/packages/backend/server/src/plugins/gcloud/config.ts
@@ -0,0 +1 @@
+export interface GCloudConfig {}
diff --git a/packages/backend/server/src/plugins/gcloud/index.ts b/packages/backend/server/src/plugins/gcloud/index.ts
new file mode 100644
index 0000000000..ed8b238c16
--- /dev/null
+++ b/packages/backend/server/src/plugins/gcloud/index.ts
@@ -0,0 +1,10 @@
+import { Global } from '@nestjs/common';
+
+import { OptionalModule } from '../../fundamentals';
+import { GCloudMetrics } from './metrics';
+
+@Global()
+@OptionalModule({
+  imports: [GCloudMetrics],
+})
+export class GCloudModule {}
diff --git a/packages/backend/server/src/plugins/gcloud/metrics.ts b/packages/backend/server/src/plugins/gcloud/metrics.ts
new file mode 100644
index 0000000000..93cef580aa
--- /dev/null
+++ b/packages/backend/server/src/plugins/gcloud/metrics.ts
@@ -0,0 +1,46 @@
+import { MetricExporter } from '@google-cloud/opentelemetry-cloud-monitoring-exporter';
+import { TraceExporter } from '@google-cloud/opentelemetry-cloud-trace-exporter';
+import { GcpDetectorSync } from '@google-cloud/opentelemetry-resource-util';
+import { Global, Provider } from '@nestjs/common';
+import { Resource } from '@opentelemetry/resources';
+import {
+  MetricReader,
+  PeriodicExportingMetricReader,
+} from '@opentelemetry/sdk-metrics';
+import { SpanExporter } from '@opentelemetry/sdk-trace-node';
+
+import { OptionalModule } from '../../fundamentals';
+import { OpentelemetryFactory } from '../../fundamentals/metrics';
+
+export class GCloudOpentelemetryFactory extends OpentelemetryFactory {
+  override getResource(): Resource {
+    return super.getResource().merge(new GcpDetectorSync().detect());
+  }
+
+  override getMetricReader(): MetricReader {
+    return new PeriodicExportingMetricReader({
+      exportIntervalMillis: 30000,
+      exportTimeoutMillis: 10000,
+      exporter: new MetricExporter({
+        prefix: 'custom.googleapis.com',
+      }),
+      metricProducers: this.getMetricsProducers(),
+    });
+  }
+
+  override getSpanExporter(): SpanExporter {
+    return new TraceExporter();
+  }
+}
+
+const factorProvider: Provider = {
+  provide: OpentelemetryFactory,
+  useFactory: () => new GCloudOpentelemetryFactory(),
+};
+
+@Global()
+@OptionalModule({
+  if: config => config.metrics.enabled,
+  overrides: [factorProvider],
+})
+export class GCloudMetrics {}
diff --git a/packages/backend/server/src/plugins/index.ts b/packages/backend/server/src/plugins/index.ts
index 291e2f06c2..1ed4039304 100644
--- a/packages/backend/server/src/plugins/index.ts
+++ b/packages/backend/server/src/plugins/index.ts
@@ -1,8 +1,10 @@
 import type { AvailablePlugins } from '../fundamentals/config';
+import { GCloudModule } from './gcloud';
 import { PaymentModule } from './payment';
 import { RedisModule } from './redis';
 
 export const pluginsMap = new Map<AvailablePlugins, AFFiNEModule>([
   ['payment', PaymentModule],
   ['redis', RedisModule],
+  ['gcloud', GCloudModule],
 ]);
diff --git a/packages/backend/server/src/plugins/payment/resolver.ts b/packages/backend/server/src/plugins/payment/resolver.ts
index 46965f5a0b..34746757d3 100644
--- a/packages/backend/server/src/plugins/payment/resolver.ts
+++ b/packages/backend/server/src/plugins/payment/resolver.ts
@@ -321,7 +321,7 @@ export class UserSubscriptionResolver {
 
     // @FIXME(@forehalo): should not mock any api for selfhosted server
     // the frontend should avoid calling such api if feature is not enabled
-    if (this.config.flavor.selfhosted) {
+    if (this.config.isSelfhosted) {
       const start = new Date();
       const end = new Date();
       end.setFullYear(start.getFullYear() + 1);
diff --git a/packages/backend/server/src/prelude.ts b/packages/backend/server/src/prelude.ts
index f71602d779..095c768761 100644
--- a/packages/backend/server/src/prelude.ts
+++ b/packages/backend/server/src/prelude.ts
@@ -5,6 +5,7 @@ import { join } from 'node:path';
 import { fileURLToPath } from 'node:url';
 
 import { config } from 'dotenv';
+import { omit } from 'lodash-es';
 
 import {
   applyEnvToConfig,
@@ -49,8 +50,17 @@ async function load() {
   // 5. load `config/affine` to patch custom configs
   await loadRemote(AFFiNE_CONFIG_PATH, 'affine.js');
 
-  if (process.env.NODE_ENV === 'development') {
-    console.log('AFFiNE Config:', JSON.stringify(globalThis.AFFiNE, null, 2));
+  // 6. load `config/affine.self` to patch custom configs
+  // This is the file only take effect in [AFFiNE Cloud]
+  if (!AFFiNE.isSelfhosted) {
+    await loadRemote(AFFiNE_CONFIG_PATH, 'affine.self.js');
+  }
+
+  if (AFFiNE.node.dev) {
+    console.log(
+      'AFFiNE Config:',
+      JSON.stringify(omit(globalThis.AFFiNE, 'ENV_MAP'), null, 2)
+    );
   }
 }
 
diff --git a/packages/backend/server/src/schema.gql b/packages/backend/server/src/schema.gql
index beb0bbdce7..14a1d27036 100644
--- a/packages/backend/server/src/schema.gql
+++ b/packages/backend/server/src/schema.gql
@@ -240,10 +240,18 @@ type ServerConfigType {
   """server identical name could be shown as badge on user interface"""
   name: String!
 
+  """server type"""
+  type: ServerDeploymentType!
+
   """server version"""
   version: String!
 }
 
+enum ServerDeploymentType {
+  Affine
+  Selfhosted
+}
+
 enum ServerFeature {
   Payment
 }
diff --git a/packages/backend/server/tests/config.spec.ts b/packages/backend/server/tests/config.spec.ts
index 0081d8c8fa..ee5ab7dbb7 100644
--- a/packages/backend/server/tests/config.spec.ts
+++ b/packages/backend/server/tests/config.spec.ts
@@ -18,7 +18,7 @@ test.afterEach.always(async () => {
 
 test('should be able to get config', t => {
   t.true(typeof config.host === 'string');
-  t.is(config.env, 'test');
+  t.is(config.NODE_ENV, 'test');
 });
 
 test('should be able to override config', async t => {
diff --git a/packages/frontend/core/src/hooks/affine/use-server-config.ts b/packages/frontend/core/src/hooks/affine/use-server-config.ts
index 8238c56c2e..1c6f8afdc4 100644
--- a/packages/frontend/core/src/hooks/affine/use-server-config.ts
+++ b/packages/frontend/core/src/hooks/affine/use-server-config.ts
@@ -1,4 +1,4 @@
-import { serverConfigQuery } from '@affine/graphql';
+import { serverConfigQuery, ServerDeploymentType } from '@affine/graphql';
 import type { BareFetcher, Middleware } from 'swr';
 
 import { useQueryImmutable } from '../use-query';
@@ -25,20 +25,20 @@ const useServerConfig = () => {
   return config.serverConfig;
 };
 
-export const useServerFlavor = () => {
+export const useServerType = () => {
   const config = useServerConfig();
 
   if (!config) {
     return 'local';
   }
 
-  return config.flavor;
+  return config.type;
 };
 
 export const useSelfHosted = () => {
-  const serverFlavor = useServerFlavor();
+  const serverType = useServerType();
 
-  return ['local', 'selfhosted'].includes(serverFlavor);
+  return ['local', ServerDeploymentType.Selfhosted].includes(serverType);
 };
 
 export const useServerBaseUrl = () => {
diff --git a/packages/frontend/graphql/src/graphql/index.ts b/packages/frontend/graphql/src/graphql/index.ts
index 867b10d24e..272ce02ab4 100644
--- a/packages/frontend/graphql/src/graphql/index.ts
+++ b/packages/frontend/graphql/src/graphql/index.ts
@@ -677,7 +677,7 @@ query serverConfig {
     baseUrl
     name
     features
-    flavor
+    type
   }
 }`,
 };
diff --git a/packages/frontend/graphql/src/graphql/server-config.gql b/packages/frontend/graphql/src/graphql/server-config.gql
index 2d42c3812b..b92710164f 100644
--- a/packages/frontend/graphql/src/graphql/server-config.gql
+++ b/packages/frontend/graphql/src/graphql/server-config.gql
@@ -4,6 +4,6 @@ query serverConfig {
     baseUrl
     name
     features
-    flavor
+    type
   }
 }
diff --git a/packages/frontend/graphql/src/schema.ts b/packages/frontend/graphql/src/schema.ts
index 34cdb794a4..b92793f97f 100644
--- a/packages/frontend/graphql/src/schema.ts
+++ b/packages/frontend/graphql/src/schema.ts
@@ -71,6 +71,11 @@ export enum PublicPageMode {
   Page = 'Page',
 }
 
+export enum ServerDeploymentType {
+  Affine = 'Affine',
+  Selfhosted = 'Selfhosted',
+}
+
 export enum ServerFeature {
   Payment = 'Payment',
 }
@@ -673,7 +678,7 @@ export type ServerConfigQuery = {
     baseUrl: string;
     name: string;
     features: Array<ServerFeature>;
-    flavor: string;
+    type: ServerDeploymentType;
   };
 };
 
diff --git a/tests/affine-cloud/playwright.config.ts b/tests/affine-cloud/playwright.config.ts
index 743b44e01d..fcd64a0b00 100644
--- a/tests/affine-cloud/playwright.config.ts
+++ b/tests/affine-cloud/playwright.config.ts
@@ -55,8 +55,6 @@ const config: PlaywrightTestConfig = {
         OAUTH_EMAIL_SENDER: 'noreply@toeverything.info',
         OAUTH_EMAIL_LOGIN: 'noreply@toeverything.info',
         OAUTH_EMAIL_PASSWORD: 'affine',
-        STRIPE_API_KEY: '1',
-        STRIPE_WEBHOOK_KEY: '1',
       },
     },
   ],