Cloud Computing Interview Questions and Answers

Cloud computing interviews often start with fundamental questions that test your understanding of core concepts, regardless of which specific cloud provider the role focuses on.

Common Questions and Key Talking Points

• What is cloud computing? — the on-demand delivery of computing resources like servers, storage, and databases over the internet, typically with pay-as-you-go pricing
• What are the main cloud service models? — Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS)
• What are the main deployment models? — public cloud, private cloud, and hybrid cloud
• What is the shared responsibility model? — the division of security responsibilities between the cloud provider and the customer, which shifts depending on the service model used
• What is auto-scaling, and why does it matter? — automatically adjusting compute resources based on demand, helping balance performance and cost
• What is high availability, and how is it achieved? — designing systems to remain operational despite failures, often using redundancy across availability zones or regions

Tips for the Interview

• Relate concepts back to real services you've used, whether Azure, AWS, or GCP
• Be ready to discuss cost optimization strategies, since this is a common follow-up topic
• Understand basic networking and security concepts, as they frequently come up