Microsoft Entra Agent ID: What It Governs, and What It Doesn’t

What Microsoft Entra Agent ID introduces, how it compares to AWS AgentCore Identity and Google’s Agent Identity, and the agents it cannot see.
Amazon Bedrock AgentCore Identity: What It Adds to Your AWS Account

A security reviewer’s guide to AgentCore Identity: workload identities, the inbound authorizer and the token vault, how many identities one agent really has, and what to check.
AWS Bedrock Security: The Identity and Logging View

The other half of Bedrock security: every identity that can call Bedrock, how its two kinds of API key differ, and the three logging settings with three different defaults.