DevOps integrates development and operations teams to enhance application performance through continuous improvement practices and tool utilization. It encompasses a cycle with stages such as planning, development, delivery, and operation, each supported by various tools tailored to specific needs. In the planning stage, project management tools like Jira and API planning tools such as Swagger facilitate efficient organization and collaboration. During development, version control systems like Git and testing tools such as Selenium and Appium ensure code integrity and functionality. The delivery phase leverages automation tools, including Jenkins and CircleCI, to streamline code deployment, while infrastructure management is facilitated through tools like Docker and Terraform. In the operation stage, Kubernetes orchestrates container-based applications, and monitoring tools like New Relic and Prometheus provide insight into application performance. The text illustrates these stages through an eCommerce store example, highlighting the practical application of DevOps tools to maintain a seamless customer experience. As DevOps culture remains constant, the diversity and number of tools continue to expand, offering new solutions for efficient workflow management.