Migrating a promotions engine

This article describes in depth how we managed to replace one of the most critical components of our checkout experience, with zero downtime. It was a large-scale migration involving approximately 30 teams and 500 active users.

Getting started

Chapter one. I hope to look back one day on an archive filled with my thoughts at various points in life, and this post is where it started. While the exact content of this blog is undecided to a large extent, my motivation is clear.