DevOps is an IT mindset that encourages communication, collaboration, integration, and automation among software developers and IT operations in order to improve the speed and quality of delivering software.

Tools Used in this methodology:

1. Source code repository - Eg. Git, Subversion, Cloudforce, Bitbucket, and TFS. Here, we will be mostly discussing about Git.
2. Build server - Eg. Jenkins, SonarQube, and Artifactory.
3. Configuration management - Eg. Puppet and Chef.
4. Virtual infrastructure - Eg. Amazon Web Services and Microsoft Azure. Private virtual clouds can also be considered here.
5. Test automation - Eg. Selenium and Water.
6. Pipeline orchestration - Kubernates, Openshift, Docker Swarm, Google Container Engine, Google Cloud Run, AWS Elastic Kubernetes Service (EKS), Amazon EC2 Container Service (ECS), Azure Container Instances, etc.