How to restrict Zoom access to specific IP addresses using Conditional Access

# Executive Summary This guide details how to restrict Zoom SSO sign‑ins to approved IP addresses by configuring Named Locations and a Conditional Access policy in Microsoft Entra ID, covering prerequisites, step‑by‑step creation, validation in report‑only mode, and recommendations (e.g., break‑glass account, static IPs, Vanity URL) to avoid locking out users.