Hi @Bharat,
AWS Identity and Access Management (IAM) is a web service that helps you securely control access to AWS resources. With IAM, you can control who is authenticated and authorized to use resources. Doing anything om AWS requires you to use IAM.
You can literally just do anything and that will require IAM.
I don't understand why do you want to do a project on IAM? You can do it on some other topic.