Shared services Program Support Center (PSC) is a wholly NON-APPROPRIATED division within the U.S. Department of Health and Human Services (HHS), that provides over 40 mission-support SHARED SERVICES to federal agencies through Inter-Agency Agreement (IAA). PSC’s impact begins with COST AVOIDANCE (obligated funds vs. actual spend) and may include reduced labor expenditures for mission-support functions, reduced backlogs, streamlined management and resource sharing, and OPERATIONAL EFFICIENCIES.