Bernerd Schaefer

Over the past four years, the Heroku Runtime team has transitioned from occasional, manual deployments to continuous, automated deployments. Changes are now rolled out globally within a few hours of merging any change—without any human intervention. It's been an overwhelmingly positive experience for us. This post describes why we decided to make the change, how we did it, and what we learned along the way.

Where We Started

Heroku’s Runtime team builds and operates Heroku’s Private Space (single-tenant) and Common Runtime (multi-tenant) platforms, from container orchestration to routing and logging. When I joined the team in 2016, the process for …