Feature Flags

1. The Incident

Three teams use a single deployment pipeline, while marketing has committed to a specific launch date.

The new wishlist-sharing feature must launch Tuesday at 9:00 AM. A press release and influencer posts are already scheduled. Because the feature is risky, it requires a canary, which first exposes a small share of traffic. However, a canary normally expands over several hours, while marketing needs one immediate release across the web and both mobile applications