A way of working
Building software is only part of the job. It also needs to be tested, deployed, watched for problems, and fixed when something fails. DevOps encourages developers and the people who run a service to share that work and learn from what happens after launch.
Teams often use CI/CD to automate checks and prepare changes for release, then monitor the software for problems. These practices support the shared work.
Sometimes it is a team name
Some companies have a DevOps team that helps others release and run software. Others have product teams handle that work with specialist support. If someone says “DevOps will handle it”, ask what task they mean.