diff --git a/src/modules/auth/auth.service.ts b/src/modules/auth/auth.service.ts
new file mode 100644
index 0000000..e2171f8
--- /dev/null
+++ b/src/modules/auth/auth.service.ts
@@ -0,0 +1,36 @@
+import { Injectable } from '@nestjs/common';
+import { AuthConfigService } from './auth.config';
+import { AuthResult, LoginData } from './auth.types';
+import { LdapAuthProvider } from './providers/ldap-auth.provider';
+import { MicrosoftOAuthProvider } from './providers/microsoft-oauth.provider';
+
+@Injectable()
+export class AuthService {
+  constructor(
+    private readonly authConfig: AuthConfigService,
+    private readonly ldapAuthProvider: LdapAuthProvider,
+    private readonly microsoftOAuthProvider: MicrosoftOAuthProvider,
+  ) {}
+
+  getPublicConfig() {
+    return this.authConfig.getPublicConfig();
+  }
+
+  loginWithLdap(loginData: LoginData): Promise<AuthResult> {
+    return this.ldapAuthProvider.authenticate(loginData);
+  }
+
+  getMicrosoftAuthorizeUrl() {
+    return this.microsoftOAuthProvider.getAuthorizeUrl();
+  }
+
+  loginWithMicrosoftCallback(query: { code?: string; state?: string }) {
+    return this.microsoftOAuthProvider.authenticateCallback(query);
+  }
+
+  getMicrosoftSuccessRedirectUrl() {
+    const config = this.authConfig.getConfig();
+
+    return config.microsoft.successRedirectUrl || `${config.frontendUrl}/login`;
+  }
+}