Available legacy bundled services

The following list shows which services are supported in second-generation runtimes:

App Engine service Availability in Alternatives
App Identity Available Migrate to Open ID Connect (OIDC) or Identity Platform
Datastore Available Migrate to Datastore client libraries
Mail Available Migrate to SendGrid, Mailgun, or Mailjet for outbound messaging only
Memcache Available Migrate to Memorystore
Modules Available Use environment variables and the App Engine Admin API to obtain information and modify your application's running services
Remote Not supported Use Cloud Client Libraries to access resources in other projects
Task Queues Available Migrate to Cloud Tasks for push queues
URL Fetch Available Migrate to standard libraries for outbound requests
Users Available Migrate to user authentication options

For more information, refer to the user guides located on the left-side navigation or see the API reference documentation.