GrowthBook is a modern feature flagging platform that helps teams manage and deploy features without breaking their app. To achieve this, it offers five can't-miss tools to help scale the feature flagging operation: prerequisite flags, simulation and archetypes, dev tools, staleness detection, and code references. These tools enable teams to understand how features will behave before they're shipped, debug issues in real-time, detect stale flags that may cause tech debt, and find flags in their actual codebase, making it easier to manage complexity as the app grows. By using these tools, teams can keep their feature flagging operation under control without losing sanity.