The Defense Information Systems Agency (DISA) is seeking sources for full life-cycle application management of their Legacy Systems, which include CSS, COPS, FABS, DITCO Web, and several other subsystems. The anticipated period of performance is from June 10, 2027, to June 9, 2032. No specific budget amount is mentioned in the description. The location for performance of services is not specified. This notice is for market research purposes to identify potential sources.