So, you want to update the software for your user, be it the nodes in your K8s cluster, a browser on the user’s desktop, an app in the user’s smartphone or even a user’s car. What can possibly go wrong? In this talk, we’ll analyze real-world software update fails and how multiple DevOps patterns, that fit a variety of scenarios, could have saved the developers. Manually making sure that everything works before sending update and expecting the user to do acceptance tests before they update is most definitely not on the list of such patterns.