Microsoft Entra Agent ID Setup Guide

This article provides a comprehensive guide for setting up Microsoft Entra Agent ID, a platform designed to represent AI agents as first-class identities in Microsoft Entra ID. It covers the full process from creating an agent identity blueprint, provisioning agent identities from it, wiring up authentication, and hardening security before production. The guide explains the three key objects: agent identity blueprint, principal, and agent identity, and how they work together to enforce consistent governance, Conditional Access, and audit logging across all AI agents in a tenant. It addresses common issues like ad-hoc service principals and offers a repeatable model for secure agent identity management.