Feature Flags: Decoupling Deploy from Release

Internal → 1% → 10% → all, with metrics watched between steps and instant rollback by toggle — deployment stops being the risky moment.

CI exercises flag-on and flag-off for active flags; the combinatorial explosion is managed by keeping flag count low, which hygiene ensures.

Skipping the discipline this article describes until an incident, audit, or stalled project forces it — every practice above is cheaper adopted early than retrofitted under pressure.