Feature Management platforms give engineering teams runtime control over feature rollout and experimentation — decoupling 'deploy' from 'release' by gating code behind configurable flags. Core capabilities include targeting rules (by user, organization, region, percentage), progressive rollouts and percentage gates, kill switches for immediate rollback, A/B experimentation with statistical-significance testing, integration with analytics for outcome measurement, approval workflows for production flag changes, multi-language SDKs, and flag-lifecycle management (cleanup of stale flags). The category has converged with the product-experimentation space as engineering-led feature flagging meets product-analytics-led A/B testing. Leading vendors include LaunchDarkly, Split, Statsig, GrowthBook, PostHog, Optimizely, Flagsmith, and ConfigCat.