Run the open-source buildkite-agent on your own infrastructure for maximum speed, control, and security. The agent checks out your source code, executes custom hooks and overrides, and then runs your build jobs. Your source code never leaves your infrastructure. You can install the agent using one of our packages and binaries for almost every platform and architecture, including Ubuntu, Debian, Mac, Windows, Docker, and more. The agent’s artifact and meta-data storage allows for share-nothing, state-free build jobs that can be easily distributed and scaled across any number of agents. Run as many build agents as you need (up to 10,000 connected per account), without breaking a sweat. The open-source Elastic CI Stack for AWS gives you an easy-to-maintain, elastically scaling CI stack in your own AWS account. Or if you prefer to roll your own, you can use the tools you’re already familiar with in your production environments (such as Packer and Terraform).