How is your IAM? | Google Cloud edition

This is a submission for the Google Cloud NEXT Writing Challenge What is this piece about: IAM is evolving from access control into a trust grid for humans, workloads, service accounts, and agents, and Google Cloud NEXT '26 makes this very clear, but how is your IAM? I have been an avid user of Google Cloud and the ecosystem around it for years. My own journey started with Firebase, because it gives developers a ridiculous amount of capability before they even have to think about infrastructure