Whether you’re a seasoned cloud engineer or preparing for your first cloud computing interview questions, it’s essential to be well-prepared. To help you succeed, we’ve compiled a list of the top 20 cloud computing interview questions and answers.

Q1. What is Cloud Computing?
Ans: Cloud computing is the delivery of computing services over the internet, offering resources like servers, storage, databases, networking, software, and more on a pay-as-you-go basis.

Q2. What are the main models of cloud service deployment?
Ans: The main models of cloud service deployment are public cloud, private cloud, hybrid cloud, and multi-cloud.

Q3. Explain the difference between scalability and elasticity in cloud computing.
Ans: Scalability refers to the ability to increase or decrease resources to handle workload changes, while elasticity refers to the automatic scaling of resources based on demand.

Q4. What are the key benefits of cloud computing?
Ans: Key benefits of cloud computing include cost savings, scalability, flexibility, disaster recovery, automatic software updates, and increased collaboration efficiency.

Q5. What is Infrastructure as a Service (IaaS)?
Ans: IaaS is a cloud computing model where users can rent IT infrastructure like servers, storage, and networking on a pay-as-you-go basis.

Q6. Can you explain the difference between SaaS, PaaS, and IaaS?
Ans: SaaS (Software as a Service) provides software applications over the internet, PaaS (Platform as a Service) provides a platform for developing and deploying applications, and IaaS (Infrastructure as a Service) provides virtualized computing resources.

Q7. What is the difference between public cloud and private cloud?
Ans: A public cloud is owned and operated by a third-party cloud service provider and available to the general public, while a private cloud is dedicated to a single organization and operated solely for that organization.

Q8. What is serverless computing?
Ans: Serverless computing is a cloud computing model where cloud providers manage the infrastructure, allowing developers to focus on writing code without worrying about server management.

Q9. What is the difference between cloud computing and traditional hosting?
Ans: Cloud computing offers on-demand access to resources over the internet, while traditional hosting relies on physical servers and infrastructure managed on-premises or by a hosting provider.

Q10. How does data security work in cloud computing?
Ans: Data security in cloud computing involves encryption, access control, network security, and compliance measures to protect data from unauthorized access, breaches, and cyber threats.