Perspecta Enterprise Solutions LLC, Chantilly, Virginia, has been awarded an Enterprise Information Technology (EIT) application development services production other transaction agreement (HS002-1219-0001) with a base period of 12 months and four optional 12-month periods. The total estimated agreement value at the time of award is $473,803,770, with a not-to-exceed value of $500,000,000 for all periods of performance and contract line item numbers. This agreement is based upon the successful completion of the Defense Counterintelligence and Security Agency’s (DCSA) security enterprise architecture and data analytics prototype other transaction agreement HS0021-19-9-0002, which was competitively awarded to Perspecta on May 14, 2019. The transaction continues the development and operations of the prototype solutions pertaining to major components of a comprehensive IT system for managing all background investigations and security clearance adjudications for federal employees and contractors. Through use of the Scaled Agile Framework (SAFe) processes, this transaction will support the development, enhancement and expansion of defense business system capabilities throughout operations of the EIT application. Work will be performed within the National Capital Region surrounding Fort Meade, Maryland. It has an estimated completion date of May 14, 2026. Fiscal 2021 Budget Activity 08, DCSA funds for $29,343,005 were obligated at the time of the award. DCSA Acquisition and Contracting, Quantico, Virginia, is the contracting activity.