Choosing the right CI/CD platform is crucial for effective software delivery, with Jenkins and GitHub Actions representing two distinct approaches. GitHub Actions, integrated into the GitHub ecosystem, offers convenience and reduced maintenance through event-driven workflows and cloud-hosted runners, but may lead to vendor lock-in and resource constraints for complex pipelines. Conversely, Jenkins provides flexibility and control, with its extensive plugin ecosystem supporting diverse enterprise integrations and customization options, but demands significant operational resources and expertise for maintenance. Buildkite emerges as a hybrid alternative, combining the strengths of both platforms by offering managed reliability alongside customizable execution environments, enabling greater flexibility without the limitations of GitHub Actions or Jenkins. The decision ultimately depends on the specific needs and context of the team, balancing control, convenience, and operational overhead.