Cloud Engineer interview questions (2026)

Cloud engineering interviews test cloud fundamentals, architecture, security & cost, and operations. Then practice them in a free AI mock interview tailored to your exact role.

Cloud fundamentals

• Explain the difference between IaaS, PaaS, and SaaS.
• How do you design for high availability across zones?
• What's your approach to infrastructure-as-code?

Architecture & scaling

• How would you architect a scalable web app in the cloud?
• How do you handle autoscaling and load balancing?
• When would you choose serverless over containers?

Security, cost & ops

• How do you keep cloud costs under control?
• How do you manage secrets and access safely?
• Walk me through how you handled a production incident.