>DevOps Interview KB

AWS Interview Questions — All Categories

58 questions tagged with AWS as a technology, across every category it appears in

In a real system with dozens of services, how would you decide which specific ones actually need multi-region treatment versus which can safely stay single-region?

AdvancedAWS8 min

What's the actual difference between designing for high availability across Availability Zones versus across Regions, and when do you actually need multi-region instead of just multi-AZ?

AdvancedAWS8 min

A junior engineer asks why deploying across multiple Availability Zones in the same region isn't enough for 'true' disaster recovery. How would you explain the actual distinction between AZs and regions?

BeginnerAWS6 min

Where does serverless (e.g. AWS Lambda) actually fit on the IaaS/PaaS/SaaS spectrum — does it fit cleanly into any of those three categories at all?

IntermediateAWS6 min

A company got breached because an S3 bucket was publicly accessible, and leadership initially blamed AWS. Why is that framing wrong, and how does the shared responsibility model actually draw the line?

BeginnerAWS6 min

After migrating to OIDC, how would you detect and alert on someone reintroducing a long-lived AWS access key as a GitHub secret?

IntermediateGitHub ActionsAWS7 min

Design a migration from long-lived AWS access keys stored as GitHub Actions secrets to OIDC-based short-lived credentials, for an organization with 40 repositories deploying to production.

AdvancedGitHub ActionsAWSOIDC12 min

How would the OIDC-based deploy design change for a monorepo where multiple independent deploy targets live in one repository?

ExpertGitHub ActionsAWS8 min

How would you scope an OIDC trust policy differently for a GitHub Actions workflow that runs on pull requests versus one that only runs on main?

AdvancedGitHub ActionsAWS8 min

terraform plan shows a production RDS instance will be destroyed and recreated after a change you thought was trivial. What would you investigate before running apply?

AdvancedTerraformAWS10 min