Discover how to modernize App Engine applications without migrating away from legacy bundled services in this 12-minute video from the Serverless Migration Station series. Learn to access familiar services on App Engine's next-generation runtimes as Google engineers Martin and Wesley guide you through upgrading a sample app to Python 3 while preserving NDB usage. Explore the timeline of bundled services in App Engine, understand the differences in upgrading across various runtimes, and gain insights into why these services were initially removed and later reintroduced. Acquire valuable knowledge to enhance your serverless application development skills on Google Cloud Platform.