DJames617 associate / DVA-C02
AWS Certified Developer - Associate Study Guide
Train AWS application-development, deployment, security, troubleshooting, SDK, and event-driven design judgment.
Certification Overview
- Exam code
- DVA-C02
- Target candidate
- Developers with 1 or more years of hands-on experience developing and maintaining AWS applications.
- Study scope
- Eight to ten weeks for developers who can already read application code and deployment pipelines. Expect SDK, event, permissions, and troubleshooting detail.
- Completion status
- Published and source-reviewed 2026-08-07
What This Exam Is Really Testing
- Whether application code uses AWS services safely, especially identity, secrets, retries, and errors.
- Whether Lambda, API Gateway, DynamoDB, SQS, EventBridge, and deployment services are integrated correctly.
- Whether CI/CD choices preserve deployment safety and repeatability.
- Whether you can use logs, metrics, traces, and errors to find the application failure.
Who This Exam Is For
Developers with 1 or more years of hands-on experience developing and maintaining AWS applications. Programming fluency and cloud application lifecycle knowledge are recommended.
Exam Blueprint
| Domain | Weight | Study page |
|---|---|---|
| Development with AWS Services | 32% | Open Domain 1 |
| Security | 26% | Open Domain 2 |
| Deployment | 24% | Open Domain 3 |
| Troubleshooting and Optimization | 18% | Open Domain 4 |
How to Use These Notes
Study like a builder. For every managed service, know the API behavior that an application must handle: throttling, retries, idempotency, pagination, event payloads, and permissions.
Domains
Development with AWS Services
Developing and optimizing applications with AWS services.
Practice this domain in AWS ArcadeSecurity
Securing application code and data.
Practice this domain in AWS ArcadeDeployment
Packaging and deploying applications by using CI/CD workflows.
Practice this domain in AWS ArcadeTroubleshooting and Optimization
Identifying and resolving application issues.
Practice this domain in AWS ArcadeCritical AWS Services
Do not study these as vocabulary words. For each service, know the workload fit, what AWS manages, what you still configure, security boundaries, scaling behavior, and cost signal.
Service Comparisons
Many AWS questions are not asking whether a service can solve the problem. They ask which service solves it with the right operational, security, availability, and cost tradeoff.
Exam Decision Patterns
Least operational overhead
Prefer managed and serverless services when they satisfy the requirement. Exceptions appear when the scenario needs host control, unsupported runtimes, specialized network behavior, or exact migration compatibility.
Highly available
Identify the failure boundary. One instance is not HA. Multiple instances in one AZ help capacity but not AZ failure. Multi-AZ handles regional AZ faults. Multi-Region handles regional events but adds complexity and cost.
Durable
Durability is about preserving data. Use replication, versioning, backups, point-in-time recovery, and tested restore plans. A durable backup does not guarantee a low RTO.
Decouple the application
Use SQS for buffering work, SNS for fanout, EventBridge for event routing, and Step Functions for visible workflow state. Add retries, DLQs, and idempotent consumers.
Least privilege
Prefer roles and temporary credentials, scope actions/resources/conditions, watch explicit denies, and remember that resource policies may also be required.
Most cost-effective
Read usage pattern, duration, access frequency, scaling behavior, data transfer, and operations. Cheapest unit price is not always lowest total cost.
Lowest latency
Move content or compute closer to users, cache aggressively, choose the right database access pattern, and avoid unnecessary cross-Region or NAT paths.
Private connectivity
Use private subnets, VPC endpoints, PrivateLink, VPN, Direct Connect, Transit Gateway, and tight DNS/routing design instead of public exposure.
What AWS Wants You to Notice
Common Exam Traps
- Putting secrets in environment variables without a secrets-management plan.
- Ignoring Lambda concurrency and retry behavior.
- Using synchronous calls where queues or events are required to decouple failures.
- Troubleshooting only the code while missing IAM deny, throttling, or missing log permissions.
Architecture Diagrams
Hands-On Practice
These labs are optional. They do not provision anything from this website. Read the cost warning before creating AWS resources.
Mastery Checklist
Checklist state is saved locally in this browser and does not change Arcade readiness scoring.
Practice in AWS Arcade
Use the Arcade after studying a domain so explanations reinforce reasoning instead of becoming answer memorization.
Sources and Review Metadata
This independent training application is not affiliated with or endorsed by Amazon Web Services. AWS, Amazon Web Services, and AWS certification names are trademarks of Amazon.com, Inc. or its affiliates.