We also have a more scalable self-hosted runner now in Open Preview: https://discuss.circleci.com/t/a-more-scalable-container-friendly-self-hosted-runner-container-agent-now-in-open-preview/45094

We've launched a blog on how to achieve basic auto-scaling with AWS ASGs: https://circleci.com/blog/autoscale-self-hosted-runners-aws/

Look out for more in this space in the near future.

Roy Robinson Hey Roy, we're actively working on some solutions in this realm. We have some existing mechanisms to support customer-built scaling mechanisms: https://circleci.com/docs/2.0/runner-scaling/

Is there a specific requirement or mechanism you're looking for?

This is a must-have.