DVA-C02 has four developer-focused domains. This is a plain-English summary with weightings; the official AWS exam guide is authoritative.
| # | Domain | Weight |
|---|---|---|
| 1 | Development with AWS Services | 32% |
| 2 | Security | 26% |
| 3 | Deployment | 24% |
| 4 | Troubleshooting and Optimization | 18% |
Domain 1 — Development with AWS Services (32%)
Building serverless and event-driven applications with Lambda, API Gateway, DynamoDB and S3, using the AWS SDK and good data-access patterns.
Domain 2 — Security (26%)
Authentication and authorisation with IAM and Cognito, encryption with KMS, secrets management, and least-privilege access for application code.
Domain 3 — Deployment (24%)
CI/CD pipelines with the AWS developer tools (CodeBuild, CodeDeploy, CodePipeline) and infrastructure as code with SAM and CloudFormation.
Domain 4 — Troubleshooting and Optimization (18%)
Observability with CloudWatch and X-Ray, error handling and retries, idempotency, and tuning application performance and cost.