diff --git a/runtime/analytics/types.ts b/runtime/analytics/types.ts
new file mode 100644
index 00000000..50ca4a66
--- /dev/null
+++ b/runtime/analytics/types.ts
@@ -0,0 +1,7 @@
+export interface AnalyticsService {
+  sendTrackingLogEvent(eventName: string, properties: Record<string, unknown>): Promise<unknown>;
+  identifyAuthenticatedUser(userId: string | number, traits?: Record<string, unknown>): void;
+  identifyAnonymousUser(traits?: Record<string, unknown>): void;
+  sendTrackEvent(eventName: string, properties?: Record<string, unknown>): void;
+  sendPageEvent(category?: string, name?: string, properties?: Record<string, unknown>): void;
+}
diff --git a/runtime/auth/AxiosJwtAuthService.js b/runtime/auth/AxiosJwtAuthService.js
index 41e4b669..5c105e6c 100644
--- a/runtime/auth/AxiosJwtAuthService.js
+++ b/runtime/auth/AxiosJwtAuthService.js
@@ -32,15 +32,9 @@ const optionsPropTypes = {
 class AxiosJwtAuthService {
   /**
    * @param {Object} options
-   * @param {Object} options.config
-   * @param {string} options.config.baseUrl
-   * @param {string} options.config.lmsBaseUrl
-   * @param {string} options.config.loginUrl
-   * @param {string} options.config.logoutUrl
-   * @param {string} options.config.refreshAccessTokenApiPath
-   * @param {string} options.config.accessTokenCookieName
-   * @param {string} options.config.csrfTokenApiPath
+   * @param {import('../../types').SiteConfig} options.config
    * @param {Object} options.loggingService requires logError and logInfo methods
+   * @param {Array} [options.middleware] Optional array of middleware functions to apply to the HTTP clients.
    */
   constructor(options) {
     this.authenticatedHttpClient = null;
@@ -288,7 +282,7 @@ class AxiosJwtAuthService {
    *  console.log(authenticatedUser); // Will contain additional user information
    * ```
    *
-   * @returns {Promise<null>}
+   * @returns {Promise<void>}
    */
   async hydrateAuthenticatedUser() {
     const user = this.getAuthenticatedUser();
diff --git a/runtime/auth/MockAuthService.js b/runtime/auth/MockAuthService.js
index 48684226..33ffb667 100644
--- a/runtime/auth/MockAuthService.js
+++ b/runtime/auth/MockAuthService.js
@@ -75,14 +75,7 @@ const optionsPropTypes = {
 class MockAuthService {
   /**
    * @param {Object} options
-   * @param {Object} options.config
-   * @param {string} options.config.baseUrl
-   * @param {string} options.config.lmsBaseUrl
-   * @param {string} options.config.loginUrl
-   * @param {string} options.config.logoutUrl
-   * @param {string} options.config.refreshAccessTokenApiPath
-   * @param {string} options.config.accessTokenCookieName
-   * @param {string} options.config.csrfTokenApiPath
+   * @param {import('../../types').SiteConfig} options.config
    * @param {Object} options.loggingService requires logError and logInfo methods
    */
   constructor(options) {
@@ -265,9 +258,9 @@ class MockAuthService {
    * console.log(authenticatedUser); // Will contain additional user information
    * ```
    *
-   * @returns {Promise<null>}
+   * @returns {Promise<void>}
    */
-  hydrateAuthenticatedUser = jest.fn(() => {
+  hydrateAuthenticatedUser = jest.fn(async () => {
     const user = this.getAuthenticatedUser();
     if (user !== null) {
       this.setAuthenticatedUser({ ...user, ...this.hydratedAuthenticatedUser });
diff --git a/runtime/auth/types.ts b/runtime/auth/types.ts
new file mode 100644
index 00000000..7616dbb0
--- /dev/null
+++ b/runtime/auth/types.ts
@@ -0,0 +1,15 @@
+import { User } from '../../types';
+
+export interface AuthService {
+  getAuthenticatedHttpClient(options?: Record<string, unknown>): unknown;
+  getHttpClient(options?: Record<string, unknown>): unknown;
+  getLoginRedirectUrl(redirectUrl?: string): string;
+  redirectToLogin(redirectUrl?: string): void;
+  getLogoutRedirectUrl(redirectUrl?: string): string;
+  redirectToLogout(redirectUrl?: string): void;
+  getAuthenticatedUser(): User | null;
+  setAuthenticatedUser(authUser: User): void;
+  fetchAuthenticatedUser(options?: Record<string, unknown>): Promise<User | null>;
+  ensureAuthenticatedUser(redirectUrl?: string): Promise<User>;
+  hydrateAuthenticatedUser(): Promise<void>;
+}
diff --git a/runtime/index.ts b/runtime/index.ts
index 6ad3accf..d810ba90 100644
--- a/runtime/index.ts
+++ b/runtime/index.ts
@@ -11,6 +11,8 @@ export {
   sendTrackingLogEvent
 } from './analytics';
 
+export type { AnalyticsService } from './analytics/types';
+
 export {
   AUTHENTICATED_USER_CHANGED,
   AUTHENTICATED_USER_TOPIC,
@@ -31,6 +33,8 @@ export {
   setAuthenticatedUser
 } from './auth';
 
+export type { AuthService } from './auth/types';
+
 export {
   getSiteConfig,
   setSiteConfig,
@@ -102,6 +106,8 @@ export {
   resetLoggingService
 } from './logging';
 
+export type { LoggingService } from './logging/types';
+
 export {
   CurrentAppContext,
   CurrentAppProvider,
diff --git a/types.ts b/types.ts
index 4e81a595..238214e3 100644
--- a/types.ts
+++ b/types.ts
@@ -2,6 +2,9 @@ import { FC, ReactElement, ReactNode } from 'react';
 import { MessageDescriptor } from 'react-intl';
 import { RouteObject } from 'react-router';
 import { SlotOperation } from './runtime/slots/types';
+import { LoggingService } from './runtime/logging/types';
+import { AnalyticsService } from './runtime/analytics/types';
+import { AuthService } from './runtime/auth/types';
 
 // Apps
 
@@ -60,6 +63,22 @@ export interface RequiredSiteConfig {
 export type LocalizedMessages = Record<string, Record<string, string>>;
 export type SiteMessages = LocalizedMessages[];
 
+export type LoggingServiceClass = new (options: {
+  config: SiteConfig;
+}) => LoggingService;
+
+export type AnalyticsServiceClass = new (options: {
+  config: SiteConfig;
+  loggingService: LoggingService;
+  httpClient: unknown;
+}) => AnalyticsService;
+
+export type AuthServiceClass = new (options: {
+  config: SiteConfig;
+  loggingService: LoggingService;
+  middleware: unknown[];
+}) => AuthService;
+
 export interface OptionalSiteConfig {
   // Site environment
   environment: EnvironmentTypes;
@@ -97,6 +116,11 @@ export interface OptionalSiteConfig {
 
   // Analytics
   segmentKey: string | null;
+
+  // Services
+  loggingService: LoggingServiceClass;
+  analyticsService: AnalyticsServiceClass;
+  authService: AuthServiceClass;
 }
 
 export type SiteConfig = RequiredSiteConfig & Partial<OptionalSiteConfig>;
@@ -125,7 +149,7 @@ export interface User {
   roles: string[];
   userId: number;
   username: string;
-  avatar: string;
+  avatar?: string;
 }
 
 export enum EnvironmentTypes {