The Buildkite is an open-source Continuous Integration tool that ensures maximum speed, security and control for your application infrastructure. It runs as a complete automated system, checking source code for the first step and then executing overrides and custom hooks. It then runs builds, ensuring that source code never leaves the bounds of your infrastructure. Buildkite can work on multiple platforms and operating systems, including popular Windows and MacOS, as well as others like Ubuntu and Debian. This CI tool's meta-data and artifacts storage allows for share-nothing, state-free builds that can further be scaled and distributed across multiple agents. Additionally, it enables users to automate other complicated delivery pipeline tasks and unblock them with the help of its web interface or REST APIs, GraphQL APIs, and Webhooks.