This does seem to be the case. CodeCommit, CodeBuild, CodePipeline and CodeDeploy feel like (and most likely were) developed by entirely different teams, and th

This does seem to be the case. CodeCommit, CodeBuild, CodePipeline and CodeDeploy feel like (and most likely were) developed by entirely different teams, and the actual experience of using any of them is not as good as your average 3rd party provider that fully focuses on just one of the pieces. The main thing the AWS equivalents have going for them at this time is the ultra-low pricing (by selling the underlying AWS services, and mostly not charging for the Code* tools).