Feature toggles and feature flags, often used interchangeably, serve as critical tools in managing software functionality without redeploying code, yet they differ significantly in their implementation and application. Feature toggles, originating in the early 2000s, are simple boolean checks in code that allow developers to hide incomplete features, and are typically temporary. In contrast, feature flags offer more sophisticated control with multivariate values and real-time dashboards, enabling targeted user segments, gradual rollouts, and business-oriented experimentation. Engineering teams initially use feature toggles for quick and uncomplicated setups, but as complexity grows, they transition to feature flags to leverage advanced capabilities like A/B testing and canary releases. Effective management of these tools involves clear ownership, lifecycle governance, and addressing challenges such as scaling bottlenecks and cross-team coordination. Ultimately, the choice between feature toggles and feature flags depends on the maturity and needs of the team, with both leading to safer, faster software delivery and enhanced responsiveness to user feedback and market changes.