AWS Certified Developer - Associate Study Guide

You're in the right place. This is the written companion to the practice exams, a complete walk through everything the AWS Certified Developer – Associate (DVA-C02) exam covers, gathered in one place.

DVA-C02 is about being the developer who builds, deploys, secures, and troubleshoots applications on AWS, not the architect drawing the system from scratch. It expects you to reach for AWS through the SDK and know the core services: Lambda, DynamoDB, S3, SQS and SNS, API Gateway. It expects you to lock things down with IAM, Cognito, KMS, and Secrets Manager, to ship safely with SAM, CloudFormation, and the CodePipeline, CodeBuild, and CodeDeploy chain, and to watch what you shipped with CloudWatch, X-Ray, and caching. Most questions come down to picking the service that fits a scenario and knowing the exact gotcha that separates two look-alikes: SQS for work distribution to one consumer versus SNS to fan one event out to many, or in-place updates versus blue/green for a Lambda or ECS release.

The guide follows the four official domains at the weighting the exam actually uses, building each mental model in plain language, pulling apart the look-alike options with comparison tables and decision trees, and closing every chapter with a cheat sheet. Start at the top and read straight through, or pick a domain from the list beside this page and dive in wherever you need the most work.