Git, Mercurial and Subversion are centralized version control tools.
Continuous integration (CI) enables multiple developers to contribute and collaborate in a shared code base at a rapid pace. This practice is essential to high-velocity teams in high-stakes software roles. Without continuous integration, developer collaboration is a tedious manual process of coordinating code updates and merges.
Continuous Integration Questions and Answers of 2021
Git, Mercurial and subversion are not centralized version control tools. Version control tools are highly required in every kind of software project and these are classified into two types one is distributed version control tools and other one is centralized version control tools.