This requirement is to procure a Firm-Fixed-Price contract for sole source Software Maintenance & Support from Treehouse Software, Inc used by the Defense Enterprise Computing Center (DECC) in Mechanicsburg, PA. Software includes N20, N20/3GL, TRIM, and Adastrip products. Expected Period of Performance is 1 October 2022 through 30 September 2027 (base year plus four option years).