Microsoft 365
Microsoft Licensing for Architects: How EA, MCA, CSP and E3 vs E5 Shape Security Design
Licensing is an architecture input, not a procurement detail. The agreement you buy through decides where Azure commitments, cost allocation and billing scopes can sit, and the Microsoft 365 plan decides which identity, endpoint, email and data controls you can design with. This guide maps EA, MCA and CSP to Azure billing structure, and E3, E5, the $12 suites and E7 to the security designs each one unlocks, checked against Microsoft's documentation in September 2026.
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