Answer: AWS CloudFormation

AWS CloudFormation is the correct answer because it is specifically designed for Infrastructure as Code (IaC). It allows you to model and provision AWS resources using templates written in JSON or YAML format. **Key points about AWS CloudFormation:** - **Infrastructure as Code**: CloudFormation enables you to define your infrastructure in code format - **Template-based**: Uses declarative templates to describe AWS resources and their dependencies - **Automated provisioning**: Automatically provisions and configures resources in the correct order - **Version control**: Templates can be stored in version control systems like Git - **Repeatable deployments**: Ensures consistent infrastructure deployments across different environments **Why other options are incorrect:** - **AWS CodeBuild**: A fully managed continuous integration service that compiles source code, runs tests, and produces software packages - **AWS Systems Manager**: Provides operational insights and actions across AWS resources for configuration management, patching, and automation - **AWS Trusted Advisor**: An online tool that provides real-time guidance to help provision resources following AWS best practices for cost optimization, security, fault tolerance, and performance CloudFormation is the core AWS service specifically designed for Infrastructure as Code, making it the correct choice for this question.

Author: Ritesh Yadav