IaaS environment-wide uniform access is the opposite of that chaos. It means one identity, one permission model, applied everywhere. Development. Staging. Production. All your instances, buckets, and services know who you are. No more environment-specific hacks. No more copied credentials hidden somewhere in your personal notes.
When infrastructure access is uniform, security strengthens. Gaps shrink. Temporary exceptions vanish. You don't weaken production because staging was too open. You don't waste days wiring IAM for a single environment. Every role, every rule, is consistent for every environment. This is how you prevent accidental exposure, drift, and the slow decay that comes with manual oversight.
It also changes the way teams move. Your deployment pipeline stops tripping over missing roles. Automation scripts run everywhere without conditional hacks. You can audit in one pass, because logs speak the same language across all your environments. Every engineer knows their access pattern before they type the first command.