Terms beginning with B describe how code is compiled and shipped safely — builds, blue-green deployments, branching strategies and backouts (rollbacks). Every entry is a clear, citable definition you can read in seconds.
Blue-green deployment runs two identical production environments side by side - one (blue) serving live traffic, the other (green) holding the new version. Once the green environment is tested and healthy, you flip the router so all traffic goes to it in one step. If anything breaks, you flip back to blue with the same switch.