DVA-C03 vs DVA-C02: AWS Developer Associate Exam Changes and Preparation Guide

The AWS Certified Developer – Associate certification is transitioning from DVA-C02 to DVA-C03, bringing updated exam objectives that reflect modern cloud application development practices. The new version places greater emphasis on AI-assisted development, AI service security, automated testing, and troubleshooting.

According to AWS, November 30, 2026, is the last day to take DVA-C02, while DVA-C03 exam delivery begins on December 1, 2026. Registration for the updated exam opened on October 27, 2026.

Candidates preparing for the new version should understand the changes in exam domain weightings, identify newly emphasized skills, and adjust their study plans accordingly. Reviewing official documentation alongside DVA-C03 exam questions and practice exercises with explanations can help candidates assess their understanding of the updated objectives and identify areas that need further study. CertQueen provides exam preparation resources to support this review process.

DVA-C02 vs DVA-C03: Exam Domain Weightings

One of the most important changes is the adjustment of the percentage assigned to each exam domain. Although the certification retains four domains, their names and weightings have been updated.

The new distribution shows that troubleshooting and optimization account for a larger share of scored content, increasing from 18% to 22%. Security remains unchanged at 26%, while development and testing/deployment receive slightly lower percentages.

Candidates should not interpret these adjustments as a reason to skip core development topics. Instead, the updated percentages provide a useful guide for allocating study time.

What Has Changed in DVA-C03?

The updated exam continues to validate the ability to develop, test, deploy, and debug applications on AWS. However, several areas have received additional attention.

1. AI-Assisted Application Development

DVA-C03 reflects the growing use of AI tools throughout the software development lifecycle. Candidates should understand how AI-assisted tools can support code generation, intelligent code completion, automated code reviews, refactoring, and security scanning.

The focus is on applying these capabilities within application development workflows rather than designing AI models or building complex machine learning architectures.

2. Security for AI Services

Security remains a major exam domain, but DVA-C03 introduces more explicit coverage of risks associated with integrating AI services into applications.

Important areas include:

●Managing access to AI services and related resources.

●Applying data privacy controls when working with AI services.

●Filtering inputs and outputs and mitigating prompt injection risks.

●Securing AI agent interactions, including tool authorization and session isolation.

●Requiring human approval for sensitive operations where appropriate.

●Preventing sensitive information from appearing in monitoring logs.

●Candidates should understand how these controls complement traditional AWS application security practices.

3. Testing and Deployment

Domain 3 changes from Deployment to Testing and Deployment. This reflects a broader view of the application lifecycle, covering both the validation of application functionality and the delivery of applications into target environments.

Candidates should review automated testing, regression testing, test result analysis, and the use of AI tools to improve testing workflows. Container-related skills are also relevant, including Amazon Elastic Container Registry (Amazon ECR), Amazon Elastic Container Service (Amazon ECS), Amazon Elastic Kubernetes Service (Amazon EKS), and AWS Fargate.

Existing knowledge of CI/CD workflows remains valuable when preparing for this domain.

4. Troubleshooting and Optimization

With its weighting increasing to 22%, Troubleshooting and Optimization deserves additional preparation time.

Candidates should be comfortable identifying application errors, interpreting monitoring information, diagnosing performance issues, and improving resource utilization. DVA-C03 also emphasizes how AI-assisted tools can help analyze errors, suggest troubleshooting approaches, and identify potential optimization opportunities.

Hands-on practice with AWS monitoring, logging, and application debugging remains an important part of preparation.

Additional Changes to the Exam Content

Beyond the domain weightings, AWS has consolidated several groups of skills to make the exam outline more streamlined.

●DynamoDB: Four separately listed skills are consolidated into one comprehensive skill.

●Security: Skills covering encryption and sensitive data are consolidated into a more focused task structure.

●Testing: Multiple testing-related skills are combined, with greater emphasis on automated testing workflows.

●Observability: Eight skills are reorganized into five.

●Optimization: Nine skills are reorganized into six.

Some topics have also moved between domains. For example, AWS SAM unit testing moves from Domain 1 to Domain 3, while AWS Lambda performance tuning moves from Domain 1 to Domain 4.

These changes make it important to consult the current DVA-C03 exam guide rather than relying solely on study materials developed for DVA-C02.

DVA-C02 vs DVA-C03: Exam Format

The main examination format remains consistent across the transition.

The exam uses multiple-choice and multiple-response questions. The 15 unscored questions do not contribute to the final result.

Candidates should verify current scheduling details and exam policies through the official AWS certification website before booking an appointment.

Should You Take DVA-C02 or DVA-C03?

The appropriate version depends primarily on your preparation progress and exam schedule.

Taking DVA-C02 Before the Deadline

Candidates who have already completed most of their preparation may choose DVA-C02 if they can take the exam by November 30, 2026. This allows them to concentrate on the version for which they have already studied.

Before making this decision, confirm appointment availability and consider whether enough time remains for revision and practice.

Preparing for DVA-C03

Candidates starting their preparation or planning to test on or after December 1, 2026, should focus on DVA-C03.

Existing DVA-C02 study materials can still provide a foundation because the core AWS development competencies remain relevant. However, candidates should supplement those materials with the updated exam objectives, particularly AI-assisted development, AI service security, testing automation, and troubleshooting.

How to Prepare for the DVA-C03 Exam

A structured preparation strategy can help candidates cover the updated objectives more effectively.

Step 1: Review the official exam guide.

Understand the four domains, their percentages, and the skills associated with each task. Use the latest version of the guide to identify the content relevant to your exam date.

Step 2: Strengthen core AWS development knowledge.

Review AWS SDKs, APIs, Lambda, DynamoDB, application integration, data handling, and the services relevant to developing and maintaining cloud applications.

Step 3: Focus on security fundamentals and AI security.

Study identity and access management, encryption, data privacy, secure service integration, and the security controls applicable to AI services and agents.

Step 4: Practice testing and deployment workflows.

Review automated testing, AWS SAM, CI/CD, container image management, and application deployment using relevant AWS services.

Step 5: Improve troubleshooting skills.

Practice diagnosing errors, interpreting logs and monitoring data, identifying performance bottlenecks, and evaluating resource optimization options.

Step 6: Use practice questions to assess your readiness.

Work through scenario-based DVA-C03 exam questions and review the explanations carefully. Focus on why a particular solution is appropriate, why alternative options are less suitable, and which AWS concepts are being tested.

Practice questions are most useful when combined with official documentation and hands-on experience. They can help reveal knowledge gaps and guide further revision, but should not replace a thorough understanding of the exam objectives.

The transition from DVA-C02 to DVA-C03 maintains the core purpose of the AWS Certified Developer – Associate certification while updating its coverage to reflect current development practices. AI-assisted coding, AI service security, testing automation, and troubleshooting are important areas for candidates to review.

With DVA-C02 ending on November 30, 2026, and DVA-C03 delivery beginning on December 1, 2026, choosing the right version and using the correct exam guide are essential preparation decisions.

Candidates can combine official AWS resources, hands-on exercises, and DVA-C03 exam questions with explanations to build a focused study plan and evaluate their readiness for the updated certification.