This case study outlines the essential role of a configuration management database (CMDB) in aligning IT with business strategy, highlighting common challenges in CMDB implementation and providing a detailed approach taken by a Fortune 100 financial services institution. It discusses critical stages from project initiation and defining requirements to selecting solutions and maintaining the CMDB, emphasizing the importance of stakeholder involvement and a thorough understanding of ITIL practices. Key lessons learned include the necessity of internal and external perspectives for successful implementation and ongoing engagement from sponsors.