---
title: "Discussion on \"Understanding IAM Roles in AWS: Trusted Entities, Types, and Practical Use Cases AWS SAA\" | Hashnode"
description: "Discussion on \"Understanding IAM Roles in AWS: Trusted Entities, Types, and Practical Use Cases AWS SAA\". Arjun had just stepped into his new role as a Cloud Security Engineer. His team was building microservices on AWS. On Day 1, a developer pinged him:\n\n“Hey bro, our EC2 instance needs access to S3. Can you create an IAM User and share the access key?”..."
url: "https://hashnode.com/posts/understanding-iam-roles-in-aws-trusted-entities-types-and-practical-use-cases-aws-saa/685ab0e591e7e0235b884c76"
---

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# [Understanding IAM Roles in AWS: Trusted Entities, Types, and Practical Use Cases AWS SAA](https://jaytillu.hashnode.dev/understanding-iam-roles-in-aws-trusted-entities-types-and-practical-use-cases-aws-saa?utm_source=hashnode&utm_medium=feed)

Arjun had just stepped into his new role as a Cloud Security Engineer. His team was building microservices on AWS. On Day 1, a developer pinged him: “Hey bro, our EC2 instance needs access to S3. Can you create an IAM User and share the access key?”...

Jun 24, 2025 · 4 min read · jaytillu.hashnode.dev  
Updated Aug 14, 2025  
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## Written by

[Jay Tillu](https://hashnode.com/@jaytillu)

@jaytillu · India

  
[View profile](https://hashnode.com/@jaytillu)

Information Security Engineer

Hello! I'm Jay Tillu, an Information Security Engineer at Simple2Call. I have expertise in security frameworks and compliance, including NIST, ISO 27001, and ISO 27701. My specialities include Vulnerability Management, Threat Analysis, and Incident Response. I have also earned certifications in Google Cybersecurity and Microsoft Azure. I’m always eager to connect and discuss cybersecurity—let's get in touch!

## Responses 1

Markdown supported · ⌘↵ to post

[Bete Wilson](https://hashnode.com/@betewilson)

[Jun 24, 2025](https://hashnode.com/posts/understanding-iam-roles-in-aws-trusted-entities-types-and-practical-use-cases-aws-saa/685ab0e591e7e0235b884c76/comment/685aba1c18b6da07b4389109)

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