The document discusses using Gitbot, a continuous deployment tool, to automate building and testing Flowplayer, a video player library. Gitbot fetches the Flowplayer code and demo site code from GitHub, builds them, publishes the demo site to S3, and updates DNS records on every code push or pull request. This allows Flowplayer developers to more easily reproduce, fix, and verify bugs without having to manually deploy to different environments. Automating builds in this way helps improve quality and catch bugs earlier.