What does the "Parameters" section in an AWS CloudFormation template do?

The "Parameters" section in an AWS CloudFormation template is designed to allow users to pass in values when creating or updating a stack. It provides a way to define input parameters that can be referenced throughout the template, making the template more flexible and reusable. This section can specify default values, allowed values, and constraints for the parameters to ensure that the inputs meet certain criteria.

By enabling users to define their own values for parameters, the "Parameters" section facilitates the customization of resources at the time of stack creation. For instance, users can input specific configurations like instance types, key names, or other settings that tailor the deployment to their needs.

The other options represent different aspects of CloudFormation templates. While stack outputs indeed provide information about the resources in the stack, resource properties define the specifications of AWS resources that are created. Similarly, conditions are used for controlling resource creation based on specific criteria but do not relate directly to input parameters. Thus, the focus on defining attributes and constraints in the "Parameters" section makes it essential for creating dynamic and user-customizable templates.