This case set focuses on a health system undergoing transformation and change. In 2015, Mary Washington Healthcare (Mary Washington) is the latest health care organization to plan to upgrade its electronic health record system. The new CEO, Mike McDermott, MD, is considering which vendor to choose: Cerner Corporation or Epic Systems Corporation. In this B case, students discover which vendor Mary Washington chose. Now, the challenge is to decide how to implement the transition, aiming to make it a positive and seamless experience for all.