DevOps belongs to a field, or methodologies and frameworks of Software Engineering.

DevOps is a set of practices combining software development (Dev) and IT operations (Ops). DevOps aims to streamline development and enable continuous delivery of high-quality software.

DevOps improves software development pipelines by automating manual processes. This makes it easier to get code from development into production more quickly while maintaining code quality. Tools and technologies like version control for source code management are part of DevOps, but the single most important component is cultural. 

DevOps requires close collaboration between development and operations teams, and encourages a willingness to experiment and learn from mistakes. Teams that practice DevOps can deliver software more rapidly and with fewer errors. DevOps methodologies are growing in popularity, particularly in industries where moving quickly is essential to remaining competitive.

See also