The article discusses how to determine if an organization performs "good" service management. Historically, organizations would implement ITIL but had no way to know if it was effective for their needs. The ISO/IEC 20000 standard provides a way to certify that a service management system meets international best practices. Certification requires implementing quality management processes, continual improvement, and assessments by independent auditors. It helps organizations prove they deliver efficient, effective services and can improve competitive advantage and win more business.