DevOps means different things to different people. To me, it is a culture of communication and collaboration across the entire team.
In DevOps, we have a software delivery pipeline that checks, deploys, and tests every build. The goal is to give us confidence that we are producing a viable candidate for production, so we have to look at many different aspects of software quality, including security. We also have to look into functionality, maintainability, performance, and many other characteristics of our software, but if we focus on security, then we often call that DevSecOps.