ProArch Microsoft 365 Security Review is a professional service that evaluates Microsoft 365 environments against 29 critical security controls to identify misconfigurations and security gaps. The assessment follows a structured four-step process: environment analysis using ProArch's "do-first" security priorities, Microsoft Secure Score, and industry best practices; risk categorization of each control as Critical, High, Medium, or Low; delivery of a detailed hardening plan with remediation steps and expected impact; and optional implementation services as a follow-on engagement. The review covers multiple security domains including identity, access, email, configuration, and behavioral security controls. Specific areas evaluated include Multi-Factor Authentication (MFA), Global Admin Configuration, Mailbox Security, Audit Logging, Suspicious Sign-In Alerts, Application Permissions, and Mail Flow Rules. The final deliverable is a 10+ page report that documents the current security posture, misconfiguration and risk findings, and prioritized remediation actions. Each control finding includes a description, specific findings unique to the environment, current implementation status, and risk impact level. The assessment is customizable to incorporate specific organizational requirements beyond standard criteria. ProArch is a Microsoft Solutions Partner and member of the Microsoft Intelligent Security Association (MISA). The service typically requires 16-20 hours at $200/hour, with final cost dependent on scope and environment complexity.