Attachment 1: DoW CIO Memo 1

DEPARTMENT OF WAR

6000 Defense Pentagon
Washington , D.C. 20301-6000

MAf 2 2 2026

CHIEF INFORMATION OFFICER

MEMORANDUM FOR SENIOR PENTAGON LEADERSHIP

COMMANDERS OF THE COMBATANT COMMANDS

DIRECTOR, DEFENSE INFORMATION SYSTEMS AGENCY

SUBJECT: Combatant Command Network Optimization Execution Guidance References: (a) "Fourth Estate Network Optimization Execution Guidance" memorandum, dated August 15, 2019
(b) Secretary of War Memorandum, "Implementation of Executive Order 14222 - Department of Government Efficiency Cost Efficiency Initiative," May 27, 2025
Based on progress achieved under the Fourth Estate Network Optimization initiative, reference (a), and consistent with reference (b), I direct further consolidation of combatant command (CCMD) common use IT services and assets identified in Attachment 1 to a Single Service Provider (SSP). Within 90 days from memorandum signature, the Defense Information Systems Agency (DISA), the designated SSP, shall provide the DoW CIO a comprehensive briefing detailing the program scope, execution milestones, resource requirements, and baseline service delivery model. The resource requirement shall include an estimate of resources, personnel, and funding requirements associated with the transfer of Common Use IT services and assets to the SSP. The Joint Staff J6 shall facilitate a forum to brief appropriate combatant command and military service leadership.
DISA, in collaboration with the Joint Staff J6 and my office, shall initiate transition of CCMDs from legacy common use IT services and assets to the SSP environment, upon Do W CIO approval of the plan DISA will execute migrations for all unclassified (NIPR) and classified (SIPR) common use IT across Fiscal Years 2027 through 2028. To ensure successful transitions to the SSP, CCMD and Combatant Command Support Agents (CCSA) shall respond to DISA requests for information and other discovery and migration data calls in accordance with Attachment 2. DISA is authorized to coordinate CCMD actions for all common use IT services and assets designated for transfer, including establishing memorandums of understanding with the CCMDs defining authorizing officials, roles, and responsibilities and memorandums of agreement to transfer funds to support common use IT from the CCSA to DISA. This consolidation is essential to advancing enterprise modernization; improving operational efficiency; and ensuring resilient, lethal, and mission-ready network capabilities.