Progressive Delivery

ELI5 — The Vibe Check

Progressive Delivery means rolling out changes gradually instead of flipping a switch for everyone at once. First 1% of users, then 10%, then 50%, then everyone — watching metrics at each step. If something breaks, only a small group is affected. It's like testing the pool water with your toe before diving in.

Real Talk

Progressive delivery extends continuous delivery with gradual rollout strategies: canary deployments, blue/green deployments, feature flags, and A/B testing. Changes are exposed to increasing user segments while monitoring key metrics, enabling automatic rollback on degradation.

When You'll Hear This

"Progressive delivery caught a latency spike at 5% rollout — we rolled back before most users noticed." / "We use feature flags for progressive delivery of new UI components."