One of the more popular services that has to come to WordPress within the last year or so is the ability to integrate Git into your theme, plugin, and/or application development workflow.
And why shouldn’t it?
Services like GitHub and Bitbucket are responsible for the rise of Git, has introduced many people to source control (who I wonder if they’d ever use it), and then third-party services have made it possible for other people to connect their repository to another environment and deploy the changes.
It completely cuts out the middle-man of S/FTP and makes sure that we’re able to deploy true changesets of our work so that the code that’s sitting in our staging (or even production) areas are as updated as possible.