Effective Patterns for Feature Flags

This post introduces various patterns for using feature flags: kill switches for risk mitigation, beta feedback and feature targeting for granular user control (canary/dark launches), hypothesis-driven development for tying metrics to code and enabling iterative feature rollout, and subscription plans/SKU management for tiered access control. It highlights the integration of LaunchDarkly's feature flags with Visual Studio Team Services (VSTS) through a marketplace extension, allowing flags to be tied per environment into releases.