tl;dr:Sean delves into the complexities and strategies of automating deployments at scale, focusing on how Slack transitioned from manual oversight to using their automated tool for deployment processes in a high-change environment. “When people talk about continuous deployment, they’re often thinking about deploying to systems as soon as changes are ready. They talk about microservices and 2-pizza teams (~8 people). But what does continuous deployment mean when you’re looking at 150 changes on a normal day? That’s a lot of pizzas…"