Test in a preview before going live
A canary deploy sends your changes to a test URL first. If everything looks good there, promote to production. If not, production stays untouched.
A canary deploy is like a dress rehearsal. Your changes go to a preview URL that nobody sees except you. You check everything. If it looks good, you push it live. If something's wrong, you fix it without any users ever seeing the broken version.
Most hosting platforms (Vercel, Netlify, etc.) create preview URLs automatically for every deploy. Use them. Before promoting to production, open the preview, check the pages that changed, look for anything broken. Only then push to production.
Risky changes. Layout overhauls, new features, dependency upgrades. The extra minute to check on preview is worth not explaining to visitors why your site is broken.
Product leader shipping across enterprise SaaS, AI in production, and 0→1. Writing about what actually ships — not what sounds good in a deck.