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Top 41 Cloud Computing Interview Questions and Answers

01/Oct/2020 | 10 minutes to read

QFLES is listing some Essential Cloud Computing Interview Questions and Answers for Freshers and mid level of Experienced Professionals prepared by Industry Experts. All answers for these Cloud Computing interview questions are given based on standard documents and tried to explain in simple and easiest way.

Best Answers to Cloud Computing Interview Questions

These are the latest cloud computing questions which may be asked in your interview.

1. What is Cloud? Explain it.

Cloud is a just a storage or retrieval of information over the Internet. In simple terms Cloud refers the servers, databases and softwares running on these servers, which can be accessed over Internet. Data centers are used as container for these servers. Companies and Users does not need to worry about to manage their servers themselves.

2. What is Cloud Computing?

Cloud Computing provides the availability of computing resources including software, servers, networking, databases, storage on demand without active management by users. In cloud computing you pay only for your usage that offers low operating cost , running you infrastructure efficiently. Availability of computing resources offers large scalability, flexibility and other benefits.

3. Explain the benefits of Cloud Computing?

Cloud computing is the on-demand availability of computing resources with full flexibility, scalability and other benefits as below.

  • Cost - Cloud computing reduce the cost by eliminating the need of buying hardwares, server, managing data centers and IT experts for managing the Infrastructure.
  • Global Scale - It provide the scalable elasticity like required amount of computing resources and from right geographic location.
  • Performance - Cloud computing services run on secure and upgraded data centers across network. These data centers are upgraded with latest technology and efficient hardware. These data centers provide several benefits over managing own single data center.
  • Security - Most of cloud computing service providers provide set of policies, technologies and special controls to protect your Infrastructure, data, servers and other resources from potential threats.
  • Speed - Cloud computing service providers provide services on demand like you can setup and use the resources with few mouse clicks only. It helps you to achieve your business requirements quickly.
  • Reliability - Most of cloud service providers support data backups, disaster recovery, business continuity at less cost and in easy way because data is mirrored at multiple data centers across different geographic locations.
  • Productivity - Managing own data centers require lot of activities like hardware maintenance, software update, security policies etc, but cloud computing makes you free just to focus on your work rather than managing other hardware update, software patches, infrastructure etc.

4. Explain the components of Cloud Computing Architecture?

There is the requirement of many components and sub components in cloud computing architecture as below.

  • Front End Platform - It can be any User Interface, fat client, think client, mobile device with that user can interact to access the cloud.
  • Back End Platform - It's a collection of servers, storage, virtual machines etc.
  • Cloud Based Delivery - It can be any PaaS, IaaS, SaaS.
  • Network - It can be any Internet, Intranet or Intercloud to deliver the cloud services.

5. What are the different types of Cloud Deployment?

Every organization or user required different types of cloud services like cloud models, types and services. Before choosing the first cloud You should determine the Architecture of cloud or type of cloud deployment for the implementation of your services. Cloud services can be deployed in 4 different ways.

  • Public Cloud
  • Private Cloud
  • Hybrid Cloud
  • Multi cloud

6. Explain the Public Cloud deployment model.

Public Cloud services are operated by external vendors called cloud providers which provide you servers, storages, computing resources. Microsoft Azure is the example of Public Cloud that is managed and operated by Microsoft. Public clouds are shared by multiple users or organizations. Multiple companies can use same virtual machines or servers. Multiple tenants use same server it's called 'Multitenancy' situation.

7. Explain the Private Cloud deployment model.

Private Cloud refers to servers, data centers, computing resources dedicated to single organization. In private cloud service and resources are maintained over a private Network. Physical location of Private cloud can be company's own data center. Third party providers can also setup the private cloud for organizations.

8. Explain the Hybrid Cloud deployment model.

Hybrid Cloud is the combination of Public cloud and private cloud. Organizations use public cloud as backup for private clouds or public cloud for some other service and private cloud for some different services. Hybrid cloud provide more deployment options, better flexibility and optimized infrastructure, compliance and security.

9. Explain the Multi Cloud deployment model.

Multi cloud refers to use multiple public clouds means to take computing resources, servers, and services from multiple public cloud providers.

10. What are the characteristics of cloud computing?

Cloud Computing offers various services for the enterprises to scale up the business with following characteristics.

  • On-Demand Self-Service - cloud computing offers the services on demand means whenever is the requirement for computing resource like servers, storage etc. These services are Self-Service without need of any IT department.
  • Rapid Elasticity and Scalability - Mostly cloud provide services to provisioning and de-provisioning resources using an automation as per demand.
    Resources can be scale up or scale down very quickly just with one click of button as per business needs. So Organizations can add or remove the resources at any time.
  • Pay As You Go - Cloud services are charged only for the resources that are being used. Mostly cloud providers work on pay-as-you-go basis.
  • Multi-tenancy - Cloud computing support multi-tenancy model means multiple customers can share same application or resources without compromising with security and performance.
  • Resource Pooling - Single resource can be used by multiple customers without compromising with performance.
  • Broad Network Access - All cloud services are available over network and can be accessed by different customer platforms.

11. What are the Cloud Computing Service Models.

Cloud computing services are divided into four categories. Sometimes these are called cloud computing service models or cloud computing stack as name 'stack' suggests these are build on top of one another. Every type has a significant role for your business.

  • Infrastructure as a Service (IaaS)
  • Platform as a Service (PaaS)
  • Software as a Service (SaaS)
  • Serverless Computing

12. Describe the IaaS(Infrastructure as a Service).

Infrastructure as a Service (IaaS) is a most basic category of cloud computing services. In this you pay the rent for IT Infrastructure (including operating systems, storage, servers, virtual machines, networks etc.) to the cloud provider. It's charged basically on pay-as-you-go basis.
For more follow Learn More about IaaS

13. Explain the Characteristics and advantage of IaaS (Infrastructure as a Service).

14. Describe the PaaS(Platform as a Service).

Platform as a Service (PaaS) cloud computing service model deliver the computing resources based on demand for developing, testing and managing the system applications. It makes developers life easier to develop the mobile or web applications as they do not need to worry about setting up and managing the Infrastructure of virtual machines, operating systems, servers, storages etc.
For more you can refer Learn more about PaaS

15. Explain the Characteristics and advantage of PaaS (Platform as a Service).

16. Describe the SaaS(Software as a Service).

Software as a Service (SaaS) is a method for delivering the software applications as a service over the network. Software as a Service is delivered based on demand and subscription. Cloud service providers are responsible for all maintenances like software updates, patch releases , security and underlying Infrastructure. End Users can access the application over the Internet using PC, tablets and mobiles.
For more you refer Learn more about SaaS

17. Explain the Characteristics and advantage of SaaS (Software as a Service).

18. Describe the Serverless computing.

Serverless Computing is overlapped with PaaS, It allow organizations to focus on their application development without managing the IT Infrastructure for servers, storages, networks etc. The cloud provider works for you here as he has the responsibility to manage the Infrastructure, capacity planning and servers for you. Serverless architecture is highly scalable. It's based on event driven architecture means Resources are utilized only when specific trigger or function occurs.
For more you can refer Learn more about Serverless computing

19. What is the role of Cloud Computing for large scale IoT solutions?

20. What are the AWS IoT services?

Amazon AWS comes with many IoT service as below.

  • FreeRTOS is a real-time and open source operating system for microcontrollers that makes small, low-power edge devices easy to program, secure, deploy connect and manage.
  • AWS IoT Greengrass is a software that allows you to run local compute, data caching, messaging, sync and machine learning inference techniques on connected devices in secure manner.
  • AWS IoT Core allow you to connect devices easily and interact with cloud application and other devices in a secure way.
  • AWS IoT Device Defender is used to monitor and audit the IoT configuration against security deviations.
  • AWS IoT Device Management provides the capability to register, organize, monitor and manage the devices at scale.
  • AWS IoT Analytics is used to run analytics on large amount of data.
  • AWS IoT SiteWise provide the capability to easily collect, organize and analyze the industrial data at scale.
  • AWS IoT Events makes it easy to listen and respond the events from large number of IoT applications.
  • AWS IoT Things Graph makes easy to connect different devices and cloud application to build IoT apps.

21. What are the Microsoft Azure IoT services?

Microsoft Azure comes with many IoT service as below.

  • Azure IoT Central - is an IoT application platform used to reduce the cost and burden of development, management and maintenance of enterprise IoT solution.
  • Azure IoT solution accelerators - use custom code and cloud services to manage the device connectivity, data processing and analytics, and presentation.
  • Azure IoT Edge - moves custom business logic and cloud analytics to devices so that organization can focus on business insights instead of data management.
  • Azure IoT Hub - provides the capability for communication between IoT applications and devices.
  • Azure Digital Twins - allow you to create digital model of your physical assets or space.
  • Azure Time Series Insights - enable you to get the insights from time-series IoT data in real time.
  • Azure Sphere - allow you to build highly secure MCU-powered devices and connect them.
  • Azure Maps - gives the location APIs for geospatial context to data
  • Azure RTOS - enable easy embedded IoT development and connectivity.
  • For more you visit Azure IoT services

22. List some top cloud service providers or cloud computing service provider companies in the market?

There are many cloud providers in the market which are providing various computing services.

Some General Interview Questions for Cloud Computing

1. How much will you rate your self in Cloud Computing?

When you attend an interview, Interviewer may ask you to rate your self in specific Technology like Cloud Computing, So It's depend on your knowledge and work experience in Cloud Computing.

2. What challenges did you face while working on Cloud Computing?

This question may be specific to your technology and completely depends on your past work experience. So you need to just explain the challenges you faced related to Cloud Computing in your Project.

3. What was your role in last Project related to Cloud Computing?

It's based on your role and responsibilities assigned to you and what functionality you implemented using Cloud Computing in your project. This question is generally asked in every interview.

4. How much experience do you have in Cloud Computing?

Here you can tell about your overall work experience on Cloud Computing.

5. Have you done any Cloud Computing Certification or Training?

It's depend on candidate like you have done any Cloud Computing training or certification. Certifications or trainings are not essential but good to have.


We have covered some frequently asked Cloud Computing Interview Questions and Answers to help you for your Interview. All these Essential Cloud Computing Interview Questions are targeted for mid level of experienced Professionals and freshers.
While attending any Cloud Computing Interview if you face any difficulty to answer any question please write to us at Our IT Expert team will find the best answer and will update on portal. In case if we find any new Cloud Computing questions, we will update the same here.

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