The logs tell the truth. They show every request, every access, every anomaly. But in mutable systems, truth can be altered. That is why immutable infrastructure changes the game. Combine it with a proxy that controls access, and you have a chain of custody that cannot be broken.
Logs access in immutable infrastructure starts with the design. No manual edits. No persistent state that can be quietly rewritten. The infrastructure is rebuilt from code on every deploy. When a proxy sits at the front, all traffic routes through a single enforcement point. Requests are logged before they touch the application. The proxy authenticates, authorizes, and records with precision.
Immutable infrastructure ensures the environment is identical across builds. If something changes in behavior, it is in the code — and the logs will tell you exactly when and why. With a logging proxy, every packet of data in or out has a record. The access logs are protected because the infrastructure does not allow in-place changes. You can store them off-host or in append-only storage for compliance and forensic analysis.