You know Java, but what is AppEngine? In this session Max will walk you from a brief introduction of Servlets to an overview of the Google AppEngine. We learn about the basics such as the data store – which is quite different from SQL -, application versions, back-ends, scheduler, instances and logging. Services such as mail, url fetch, task queue are also explained. Since we use GAE/J since 2010 in Calpano we also talk about costs and experience in practice.