Domain 1 · 32% of Exam

Development with AWS Services

Domain 1 tests your ability to develop, deploy, and maintain applications using AWS SDKs, APIs, CLI, and core compute, storage, database, and messaging services.

What You'll Be Tested On

  • Developing code for applications using AWS SDKs, CLI, and APIs
  • Implementing application logic with Lambda, Step Functions, and EventBridge
  • Working with data stores (DynamoDB, S3, RDS, ElastiCache)
  • Implementing messaging and streaming with SQS, SNS, and Kinesis
  • Configuring API Gateway REST and HTTP APIs
  • Containerized development with ECS and ECR

Key AWS Services in This Domain

λLambda🗄️DynamoDB🌐API Gateway📦S3📬SQS📢SNS🔀Step Functions🐳ECS🌊Kinesis🗃️RDS⚡ElastiCache🌍CloudFront

Exam Tips for Domain 1

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Know the differences between SQS Standard and FIFO queues, especially for ordering and deduplication.

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Understand Lambda concurrency — reserved vs provisioned — and how cold starts affect performance.

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DynamoDB GSI and LSI have different consistency, throughput, and key requirements — know when to use each.

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API Gateway HTTP APIs are cheaper and faster; REST APIs offer more features like caching and usage plans.

Practice Domain 1 Questions

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Other DVA-C02 Domains

Domain 2Security26%Domain 3Deployment24%Domain 4Troubleshooting and Optimization18%
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