DevOps is a technique/methodology, not a technology, that is being adopted by every firm these days. It includes the following tools

1. Fundamental understanding of the Linux operating system
2. GitHub/Git
3. Maven
4. Nexus Repository and Apache TomCat Server
5. Jenkins
6. Docker
7. Kubernetes
8. SonarQube
9. Ansible
10. Terraform
11. Shell Scripting