What is Google App Engine?
Google App Engine is a Platform-as-a-Service (Paas) provider that equips web application developers with all the resources and tools that they need to develop, test, and run their applications on Google's infrastructure. Everything is built into the kit, so with one download of the SDK, you'll be well on your way to first-rate apps.
Google App Engine customers
Khan Academy, Best Buy, Gigya, MetOffice, Getaround, Mimiboard, NewsLimited, WebFilings, and CloudLock.