"You can't protect what you don't know exists" has become a foundational security principle—but equally critical is this: you will not fix something if you're afraid it might break your business. Ownership isn't just an administrative task; it's the critical bridge connecting awareness of an identity-related risk to your ability to take action. Without clear, accountable ownership—particularly in managing AI identities—you simply cannot meaningfully reduce risk. In this chapter, we'll explore why ownership is the essential security control that transforms visibility into actionable security improvements. Bottom line: ownership isn't optional; it's foundational to effective identity governance.