> You can also get comparable performance out of https://buildkite.com/ https://buildkite.com/ which lets you self-host runners on AWS you can self-host github

> You can also get comparable performance out of https://buildkite.com/ https://buildkite.com/ which lets you self-host runners on AWS you can self-host github runners as well, with a few caveats, the most serious one being that then you are responsible for cleaning up the state of your self-hosted runner between runs https://docs.github.com/en/actions/hosting-your-own-runners/about-self-hosted-runners https://docs.github.com/en/actions/hosting-your-own-runners/... structural isolation guarantees of the form "build execution during run N cannot possibly impact build execution of run N+1" are tremendously helpful -- they reduce the number of weird CI failures and the cost to triage and fix each weird CI failure (by reducing the space of possible interactions). If you cannot offer similar guarantees when self hosting your own CI infrastructure then it may not be wise to self host.