Description: A StackSet in AWS CloudFormation is a set of stacks that allows managing resources across multiple accounts and regions simultaneously. This functionality is particularly useful for organizations operating in a distributed cloud environment, as it facilitates the deployment and maintenance of consistent infrastructures across different environments. With StackSets, administrators can create, update, or delete stacks in multiple accounts and regions from a single template, saving time and reducing the likelihood of human errors. Additionally, StackSets allows for permission management and configuration of change propagation, providing extra control over how and when modifications are applied. This tool is essential for organizations looking to scale their cloud operations efficiently and securely, ensuring that all resources align with organizational policies and standards.