Maven is one of the most popular automation and management tool from Apache Software Foundation. Maven is built on Java and is used by developers to build any number of projects, dependencies using POM (Project Object Model) and plugins to desired outputs such as jar, war, and metadata.
If you are interested in learning more about Maven, check out the YouTube video on Maven Tutorial and get your fundamentals cleared. If you are serious about breaking into the DevOps domain, then check out the DevOps course from Intellipaat.