In this last chapter of the book, we will look at Continuous Deployment and its difference from Continuous Delivery. We have already set up Continuous Delivery in the last chapter. In this chapter, we will use our new branch to build and test our software and change the master branch to actually deploy and test the software fully automated. As explained in the last chapter, simply merging those branches, or cherry-picking specific commits, can lead to a more-or-less automated deployment. With Continuous Deployment, we want everything to be fully automated. In both cases, it is very important that your software is always deployable, but continuous deployment takes that statement a step further by actually deploying the software to a production environment.
As mentioned before, and I want to stress this again and again, continuous deployment is not always an...