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AWS

100 AWS interview questions

Only coding challenges
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AWS Fundamentals


  • 1.

    What is Amazon Web Services (AWS) and what are its key features?

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  • 2.

    Explain the concept of Regions and Availability Zones in AWS.

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  • 3.

    What is an Amazon Machine Image (AMI) and how is it used?

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  • 4.

    Describe the difference between Elastic IP and Public IP in AWS.

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  • 5.

    What is the role of the AWS Management Console?

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  • 6.

    Explain the concept of Elastic Computing in AWS.

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  • 7.

    What is AWS Identity and Access Management (IAM) and why is it important?

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  • 8.

    Describe the AWS Shared Responsibility Model.

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  • 9.

    What is the difference between Vertical Scaling and Horizontal Scaling in AWS?

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  • 10.

    Explain the concept of High Availability in AWS.

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Compute Services


  • 11.

    What is Amazon Elastic Compute Cloud (EC2) and what are its key features?

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  • 12.

    Describe the different EC2 instance types and their use cases.

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  • 13.

    What is Amazon Elastic Container Service (ECS) and how does it work?

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  • 14.

    Explain the difference between Amazon EC2 and AWS Lambda.

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  • 15.

    What is AWS Elastic Beanstalk and when would you use it?

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  • 16.

    How does Auto Scaling work in AWS?

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  • 17.

    What is Amazon Elastic Kubernetes Service (EKS) and its benefits?

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  • 18.

    Describe the concept of Spot Instances in AWS.

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  • 19.

    What is AWS Fargate and how does it differ from Amazon ECS?

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  • 20.

    Explain the purpose of Amazon EC2 Container Registry (ECR).

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Storage and Database Services


  • 21.

    What is Amazon Simple Storage Service (S3) and its key features?

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  • 22.

    Explain the difference between Amazon S3 and Amazon Elastic Block Store (EBS).

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  • 23.

    What is Amazon Relational Database Service (RDS) and what database engines does it support?

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  • 24.

    Describe the concept of Amazon S3 buckets and objects.

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  • 25.

    What is Amazon DynamoDB and when would you use it?

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  • 26.

    Explain the difference between Amazon RDS and Amazon Aurora.

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  • 27.

    What is Amazon Elastic File System (EFS) and its use cases?

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  • 28.

    How does Amazon S3 ensure data durability and availability?

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  • 29.

    What is Amazon Redshift and how does it differ from Amazon RDS?

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  • 30.

    Describe the concept of Amazon S3 Glacier and its use cases.

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Networking and Content Delivery


  • 31.

    What is Amazon Virtual Private Cloud (VPC) and its key components?

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  • 32.

    Explain the difference between Security Groups and Network Access Control Lists (NACLs) in AWS.

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  • 33.

    What is Amazon Route 53 and how does it work?

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  • 34.

    Describe the concept of Subnets in AWS VPC.

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  • 35.

    What is Amazon CloudFront and its benefits?

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  • 36.

    Explain the purpose of Elastic Load Balancing (ELB) in AWS.

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  • 37.

    What is AWS Direct Connect and when would you use it?

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  • 38.

    How does Amazon VPC peering work?

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  • 39.

    What is Amazon API Gateway and its use cases?

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  • 40.

    Describe the concept of AWS Transit Gateway.

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Security and Compliance


  • 41.

    What is AWS Key Management Service (KMS) and how does it work?

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  • 42.

    Explain the concept of AWS CloudTrail and its benefits.

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  • 43.

    What is AWS Web Application Firewall (WAF) and its use cases?

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  • 44.

    Describe the purpose of AWS Shield and its features.

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  • 45.

    What is AWS Secrets Manager and how does it help secure sensitive information?

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  • 46.

    Explain the concept of AWS Compliance Programs.

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  • 47.

    What is AWS Config and how does it help with compliance and governance?

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  • 48.

    Describe the role of AWS GuardDuty in security monitoring.

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  • 49.

    What is AWS Security Hub and its key features?

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  • 50.

    Explain the concept of AWS Artifact and its purpose.

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Monitoring and Management


  • 51.

    What is Amazon CloudWatch and its key components?

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  • 52.

    Explain the difference between Amazon CloudWatch and AWS CloudTrail.

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  • 53.

    What is AWS Systems Manager and its use cases?

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  • 54.

    Describe the concept of Amazon EventBridge (formerly CloudWatch Events).

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  • 55.

    What is AWS OpsWorks and how does it help with infrastructure management?

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  • 56.

    Explain the purpose of AWS Config Rules.

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  • 57.

    What is AWS CloudFormation and its benefits?

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  • 58.

    Describe the concept of AWS Service Catalog.

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  • 59.

    What is AWS Trusted Advisor and how does it help optimize AWS usage?

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  • 60.

    Explain the role of AWS Personal Health Dashboard.

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Application Integration and Serverless


  • 61.

    What is Amazon Simple Queue Service (SQS) and its use cases?

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  • 62.

    Explain the difference between Amazon SQS and Amazon Simple Notification Service (SNS).

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  • 63.

    What is AWS Lambda and its key features?

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  • 64.

    Describe the concept of Amazon API Gateway and its benefits.

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  • 65.

    What is Amazon DynamoDB Streams and how does it work?

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  • 66.

    Explain the purpose of AWS Step Functions.

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  • 67.

    What is Amazon Kinesis and its use cases?

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  • 68.

    Describe the concept of AWS AppSync and its benefits.

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  • 69.

    What is Amazon EventBridge (formerly CloudWatch Events) and its role in serverless architectures?

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  • 70.

    Explain the concept of AWS Serverless Application Model (SAM).

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Data Analytics and Machine Learning


  • 71.

    What is Amazon Elastic MapReduce (EMR) and its key features?

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  • 72.

    Explain the difference between Amazon Redshift and Amazon Athena.

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  • 73.

    What is Amazon Kinesis Data Streams and its use cases?

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  • 74.

    Describe the concept of Amazon Glue and its benefits.

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  • 75.

    What is Amazon SageMaker and how does it help with machine learning?

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  • 76.

    Explain the purpose of Amazon QuickSight.

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  • 77.

    What is AWS Data Pipeline and its role in data processing?

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  • 78.

    Describe the concept of Amazon Rekognition and its use cases.

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  • 79.

    What is Amazon Comprehend and how does it help with natural language processing?

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  • 80.

    Explain the concept of Amazon Forecast and its benefits.

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Deployment and DevOps


  • 81.

    What is AWS CodePipeline and its key features?

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  • 82.

    Explain the difference between AWS CodeCommit and AWS CodeDeploy.

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  • 83.

    What is AWS CodeBuild and how does it work?

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  • 84.

    Describe the concept of AWS CodeStar and its benefits.

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  • 85.

    What is AWS X-Ray and its role in application debugging?

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  • 86.

    Explain the purpose of AWS CloudFormation Nested Stacks.

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  • 87.

    What is AWS OpsWorks for Chef Automate and its use cases?

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  • 88.

    Describe the concept of AWS Systems Manager Parameter Store.

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  • 89.

    What is AWS CloudFormation Drift Detection and its benefits?

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  • 90.

    Explain the concept of AWS CodePipeline Approval Actions.

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Advanced Topics and Best Practices


  • 91.

    What is AWS Well-Architected Framework and its pillars?

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  • 92.

    Explain the concept of AWS Serverless Application Repository.

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  • 93.

    What is AWS Outposts and its use cases?

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  • 94.

    Describe the concept of AWS Wavelength and its benefits.

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  • 95.

    What is AWS Local Zones and when would you use them?

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  • 96.

    Explain the purpose of AWS CloudFormation Custom Resources.

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  • 97.

    What is AWS Elastic Beanstalk Blue/Green Deployments and its benefits?

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  • 98.

    Describe the concept of AWS Global Accelerator.

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  • 99.

    What is AWS Control Tower and its role in multi-account management?

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  • 100.

    Explain the concept of AWS Savings Plans and its benefits.

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