Which tool should a developer use to integrate AWS service features directly into an application?
AWS Software Development Kit
AWS CodeDeploy
AWS Lambda
AWS Batch
Explanations:
AWS SDK provides APIs for developers to integrate AWS services directly into applications.
AWS CodeDeploy is used for automating code deployments, not directly for integrating AWS services.
AWS Lambda is a compute service to run code in response to events, not for general AWS service integration.
AWS Batch is a service for running batch computing jobs, not for integrating AWS services into applications.