With CMMC Phase 1 enforcement starting November 10, 2025, many defense contractors are rushing into Microsoft 365 GCC High—and unknowingly overspending. GCC High licensing is complex, and without a clear strategy, organizations often overbuy G5 licenses and inflate costs by 18–27% while still struggling with compliance.

This blog breaks down real GCC High pricing scenarios, explains the true cost difference between M365 G3 vs G5, highlights upcoming FY26 pricing and Entra ID security changes, and shows how a right-sized licensing model can deliver full CMMC, DFARS, and ITAR compliance at the lowest possible total cost. Learn how ECF Data’s License Mapping Diagnostic helps contractors stop wasting budget, reduce TCO, and prepare confidently for CMMC enforcement.

Stop overspending on GCC High. Optimize your licenses before FY26. Read the full guide and request your GCC High Pricing Optimization.