A DevOps tools approach to agile software development helps developers and operations teams build, test, deploy and monitor applications with speed, quality and control. Successful DevOps software implementations generally rely on an integrated set of solutions, or a toolchain, to remove manual steps, reduce errors, increase team agility and scale beyond small, isolated teams.

Listed below are the DevOps practices and tools. You need to explain in details the history, benefit, how it works, screenshot of environment and platform of:

1. Jenkins
2. Ansible
3. Docker