Answer: AWS Cloud Development Kit (AWS CDK)

The AWS Cloud Development Kit (AWS CDK) is the correct answer because it allows developers to define cloud infrastructure using familiar programming languages like TypeScript, Python, Java, and C#. Unlike AWS CloudFormation which uses JSON/YAML templates, AWS CDK enables infrastructure-as-code using actual programming languages, providing benefits like code reuse, abstraction, and better development workflows. AWS CodePipeline is a continuous delivery service, and AWS Systems Manager is for operational data and automation tasks.

Author: Ritesh Yadav