DISA is seeking sources to migrate the Department of War’s 11 Combatant Commands’ common-use NIPRNet and SIPRNet environments onto the DISA-managed DoDNet. The effort is driven by a memo dated 22 May 2026, which directs that migrations must be completed by the end of Fiscal Year 2028. The approximately 231,000 users and 200 sites span both Continental U.S. and global locations, though specific site locations are classified. No budget information is provided in this sources sought notice. This presolicitation notice is intended to determine the availability and technical capability of small and large businesses.