Thread by @yourclouddude

🧵 AWS IAM Made Simple (No More Confusion)
Struggling to understand AWS IAM?

Let’s break it down in plain English 👇

1️⃣ What is IAM?
IAM = Identity and Access Management

It controls who can do what in your AWS account.
• Users
• Groups
• Roles
• Policies

It’s about permissions + security.

2️⃣ Key Components Explained
• User = A real person (e.g., you)
• Group = A set of users (e.g., Dev Team)
• Role = Temporary identity with permissions
• Policy = Rules (in JSON) that allow/deny actions

3️⃣ Example Use Case
You want a developer to access S3 buckets only.

→ Create IAM User
→ Attach “S3ReadOnlyAccess” policy
→ Done. Least privilege, secure.

4️⃣ Best Practices (Always!)
✅ Enable MFA (extra login protection)
✅ Never use Root for daily tasks
✅ Use Roles for EC2, Lambda, etc.
✅ Start with AWS Managed Policies
✅ Follow Least Privilege

5️⃣ Pro Tip:
Use the IAM Policy Simulator to test if your setup works — no guesswork.

6️⃣ Common Mistake
❌ “Full Admin Access” for everyone = Disaster
✅ Only give permissions needed for the task

🎯 Master IAM = Better security + smoother AWS projects

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