PlanetScale has developed a non-blocking schema change workflow to alleviate the challenges of schema changes in relational databases, allowing developers to push schema changes as easily and often as they push code changes, without impacting production or requiring additional management overhead. The platform uses Vitess and gh-ost under the hood to provide a safe, easy, reliable way to test out schema changes on isolated branches, analyze for conflicts, deploy in the background, and protect users from making changes that block databases or slow down production during schema changes.