Jenkins is a widely-used open-source automation server designed for continuous integration (CI) and build automation, where it executes a series of predefined jobs or tasks triggered by changes in a code repository. It is particularly valuable in large organizations where multiple teams may work simultaneously on the same project, as it detects integration issues and notifies developers promptly. Jenkins supports automation of repetitive tasks, saving time and optimizing development processes, and its functionality was enhanced with the introduction of Pipelines, which allow workflows to be defined within the project source code. While Jenkins is a popular choice for CI/CD, other alternatives like GitLab CI/CD, Circle CI, Bamboo, and Travis CI offer varying features and integrations, such as seamless integration with other platforms or the ability to handle the entire development lifecycle within a single application. Jenkins and its alternatives play critical roles in ensuring reliable delivery processes by allowing rapid detection and resolution of issues, thereby enhancing productivity and product quality.