The GitHub Deployments API now facilitates the triggering of Buildkite deployment pipelines, offering integration with tools like hubot-deploy to manage deployment processes. This integration supports options such as 'required_contexts' to ensure that other services and pipelines have successfully completed before deployment is permitted. When a GitHub deployment is initiated, a series of events occur involving GitHub, Buildkite, and its agent, leading to the creation of a Deployment Status that appears on the relevant commit, though visibility is limited outside a pull request. The integration introduces four specific environment variables for deployment builds, enhancing tracking and linking capabilities within pull requests. Buildkite allows multiple projects per GitHub repository, enabling users to separate deployment projects from regular CI builds for better visibility and control, thus enriching the deployment tracking experience on GitHub.