Strengthening Enterprise Security with Microsoft Zero Trust DNS and Infoblox Threat Defense™

This document describes Microsoft’s Zero Trust DNS (ZTDNS) for Windows 11 and Infoblox Threat Defense as a combined Protective DNS solution that enforces encrypted, policy-driven DNS resolution, restricts connections to trusted destinations, and leverages threat intelligence and analytics to block malicious domains early while providing visibility and integrations with SIEM/SOAR/XDR across on‑prem, cloud, and roaming environments.