Why GIT is considered better than CVS for version control system?

GIT is a distributed system. In GIT, any person can create its own branch and start checking in the code. Once the code is tested, it is merged into main GIT repo. IN between, Dev, QA and product can validate the implementation of that code.

In CVS, there is a centralized system that maintains all the commits and changes.
GIT is open source software and there are plenty of extensions in GIT for use by our teams.