Deployment safety. How to ship changes safely: canary releases, change tracking, and what to check before and after every deploy reaches production.

Most production incidents start with a change: a deploy, a config edit, a new dependency or a flag flipped on a Friday. Deployment safety is the practice of shipping those changes without breaking what is already live, and of knowing quickly when one does.

These guides are for teams that ship to main every day and want to keep doing it. They cover gradual rollouts, tracking what changed and when, isolating code you did not write and the checks worth running before and after a change reaches production. When a platform launches something new, such as sandboxes for agent workloads or private networking for them, there is a guide on setting it up, what it costs and the limits to plan around. Every guide ends with how to confirm the change behaved as expected.

How Polylane works on these platforms: Cloudflare, Vercel and AWS.