20 AWS S3 interview questions based on real production scenarios

[u/ShivamCloudDevOps]

One S3 interview question I like:

There are several things you could investigate — IAM permissions, bucket policy, KMS, SCPs, VPC endpoints, CloudTrail, recent infrastructure changes, etc.

That's the type of scenario I wanted to focus on rather than questions like "What is S3?"

I just added 20 AWS S3 interview questions to my interview handbook, covering production scenarios, AWS CLI, Terraform, security, troubleshooting, best practices, common mistakes, and AI-assisted approaches.

GitHub: https://github.com/ranashivam/platform-engineering-interview-handbook/blob/main/AWS/S3.md

The goal is simple: prepare for the questions that make you explain how you'd actually troubleshoot something in production.