Cloud Computing (AWS & Azure) interview questions and answers
The most frequently asked Cloud Computing (AWS & Azure) interview questions, with simple answers to help you revise before your interview.
01What are IaaS, PaaS and SaaS?
IaaS provides virtual infrastructure such as servers. PaaS provides a platform to build and deploy apps. SaaS delivers complete software over the internet.
02What is an EC2 instance?
An EC2 instance is a virtual server in AWS that you can configure with different CPU, memory and storage options.
03What is the difference between a region and an availability zone?
A region is a geographic area. Each region contains multiple isolated availability zones (data centres) to provide high availability.
04What is auto scaling?
Auto scaling automatically adds or removes compute resources based on demand, helping maintain performance while controlling costs.
05What is IAM?
Identity and Access Management controls who can access cloud resources and what actions they can perform, using users, groups, roles and policies.
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