AI Writes Code in Hours. It Still Takes Weeks to Ship.

Teams adopt AI-assisted coding tools, feature code ships in hours instead of days, PRs fly in faster than ever. Stripe recently shared that their AI agents produce over 1,300 merged pull requests per week with no human-written code. Yet overall delivery speed stalls. QA is still a week behind. Staging is broken because three teams deployed conflicting changes to the same shared environment on Tuesday. The PRs pile up, waiting for a slot in an environment that’s currently on fire. The bottleneck was never writing code. It was everything that happens after: coordination, validation, integration. And now that code is being produced by AI agents at machine speed, those bottlenecks are more painful and more visible than ever. The fix isn’t an AI problem, it’s a delivery infrastructure problem. And I’ve been working on it since long before AI coding tools existed. Eight years ago, I joined a 30-person startup on a greenfield project and had the chance to implement preview environments from d