The notion of devops means that you’re streamlining the movement of applications from the point of need to production. It matters not if you’re changing or improving applications or building new ones.
Of course, devops arose around the rise of cloud computing, and that’s no mystery. Cloud computing provides a point of central deployment using a shared consumption model. So, devops, fits well into that model considering that you’re consistently developing and deploying applications around the notion of continuous improvement.