Note: A few brief words on a sharing session by a teammate. App Engine frees development from the tedious deployment and configuration process and provides full-fledged automated support services. Its Controller is the brain of App Engine, coordinating and controlling the operation of the whole engine. The slides mainly cover App Engine’s design approach and evolution, and also give thought to resource scheduling and failure disaster recovery.

1. Work Scenario The team I am on has 20+ people and carries the responsibilities of both PaaS and SaaS development. The people who develop PaaS, the PaaSer, are mainly responsible for developing and maintaining the PaaS platform, with the goal of providing the SaaS developers with the APIs and documentation they need.