DevOps, Platform Engineering, SRE

By the early 2000s, most new software development done was on websites, or else on company data centers. In both of those worlds, there were two sides: the developers who created changes, and the operations staff whose job was to keep the system stable. As the easiest way to keep systems stable is to prevent change, the two were often at odds with each other. The DevOps movement tried to align the incentives between the two, by getting operations on the same side as the developers, using the same programming languages, tools, and techniques, and often applying programming acumen to operations problems.

By 2011, continuous delivery was presented as a platonic ideal for software – eliminate regression testing by pushing just what changed and nothing else, all the time! Yet at the same time, software came from a single-build tradition that went all the way back to Windows and DOS applications.

In many cases, DevOps/Platform Engineering includes...