Without much fanfare, Google introduced a new version control platform, hosted on its vast cloud. If this sounds somewhat familiar, you may be thinking of Google Code, which is now defunct. The big difference is that Google’s new Cloud Source Repositories is a git platform, which means it is a lot more flexible (and useful) than Google Code.
Google Code was launched back in 2006, a couple of years before GitHub and Bitbucket appeared on the scene, quickly overtaking Google Code in popularity. Google finally pulled the plug on Google Code in March 2015, citing lack of interest.