COBIT vs. ITIL vs. ISO 27001: three frameworks that often get confused, but each solves a different problem. COBIT governs enterprise IT, aligning technology decisions with business objectives. ITIL manages IT services, focused on delivery, support, and continual improvement. ISO/IEC 27001 secures information through a certifiable information security management system. Knowing which one applies to your role and when to use more than one together is a core skill for CIOs, service managers, and security professionals alike.