AWS Certified Developer Associate DVA-C02 Practice Question

The correct option is AWS Serverless Application Model (SAM). AWS SAM is an open-source framework specifically designed to streamline the development and deployment of serverless applications. It uses a simplified YAML or JSON template syntax, which is an extension of AWS CloudFormation, to define serverless resources like functions, APIs, and event source mappings. SAM also has built-in features for managing different deployment environments, directly meeting the user's requirements.

• AWS CloudFormation is the underlying Infrastructure as Code (IaC) service that SAM uses. While you can define the entire application using native CloudFormation, its syntax is more verbose for serverless resources. SAM provides a specialized, higher-level abstraction that simplifies the template, making it the more appropriate and efficient tool for this specific scenario.
• The AWS Cloud Development Kit (CDK) is an IaC framework that uses familiar programming languages (like Python or TypeScript) to define cloud resources. The question specifically asks for a tool that uses a declarative 'template format' (like YAML/JSON), making SAM the better fit over the programmatic approach of the CDK.
• AWS CodeDeploy is a service that automates application deployments to various compute services, including AWS Lambda. It is focused on the deployment process itself, such as managing traffic-shifting strategies like canary and blue/green, rather than defining the infrastructure resources in a template.