Multi-Account AWS Stabilization
From one sprawling account with snowflake IAM keys to a clean multi-account structure with auditable change control.
A growth-stage SaaS had a single AWS account doing everything: production, staging, internal tools, ad-hoc engineer sandboxes. Identity was a thicket of long-lived keys. I introduced AWS Organizations, Control Tower, account-level isolation, and Terraform for repeatable provisioning. By the end the team could land a new environment in an afternoon with full change history.