A new tutorial walks through setting up AWS Identity and Access Management (IAM) for a fictional fintech startup, Zappy e-Bank. The project demonstrates how to secure cloud infrastructure by enforcing strict access controls, a critical practice for any company handling sensitive financial data. The guide details creating specific policies for different roles.

A developer policy grants full access to EC2 instances, while a data analyst policy allows actions within S3 storage. These policies are then attached to dedicated user groups, ensuring permissions are managed at a team level rather than individually. Following the setup, the tutorial creates two users, John and Mary, assigning them to their respective groups.

The final step involves logging in as each user to verify that permissions work correctly: John successfully launches an Ubuntu server on EC2, while Mary creates a new S3 bucket. This hands-on approach effectively illustrates the principle of least privilege in a real-world scenario.