App Engine Go Overview. Honestly, I would find it more exciting if Google would move away from outdated Python 2.5. But well, instead of Python 2.7 or a JVM language, you can now program the AppEngine with Go. At the same time, however, prices and conditions have changed, so it would probably be better to first check whether it is worth it at all. Because you can also use Go just as well on your own root server ...