This case study details how Ensono partnered with SAIC to help a major U.S. defense organization modernize a critical mainframe application mandated for migration to the cloud. Ensono converted 64 programs - nearly 45,000 lines of COBOL and Ideal code - into C# and transitioned the legacy Datacom database to SQL Server. The modernization effort reduced risk, improved maintainability, and delivered a secure, future-ready system aligned with Department of Defense requirements.