Fine-grained access control is the guard that decides who gets inside and what they can do once they’re there. It defines permissions down to specific actions, resources, and conditions. When deployed in Infrastructure as Code (IaC) workflows, it enforces policy where changes begin—inside the code that builds your cloud.
But IaC is only as strong as its integrity. Drift detection catches the moment reality stops matching the code. Drift happens when someone changes infrastructure outside IaC, bypassing your guardrails. It can be intentional or accidental, but without detection, you lose the trust that your access controls are doing their job.
Combining fine-grained access control with IaC drift detection closes the gap. Policies apply exactly as written in the IaC files. Drift alerts surface every mismatch between defined rules and actual state. This makes it possible to lock down resources, limit commands, and react the instant unauthorized changes occur.