Is It Safe to Enable Preview Features in Your Production Tenant?

This article discusses Microsoft's announcement (MC1448379) to retire the memberOf rule operator for dynamic groups by November 2026, affecting organizations that rely on it for access, licensing, and policy targeting. The author highlights the risks of using preview features in production, citing Microsoft's terms that previews are 'as-is' with limited support and can be discontinued anytime. They advise using previews only in test environments and treating any production use as an experiment with fallback plans. The article provides practical guidance for IT professionals on managing preview feature adoption.