stack_master

Displays template diffs, parameter diffs, and CloudFormation change sets before applying, ensuring operators can review and approve changes, as shown in the apply command demo in the README.

Supports resolvers for AWS resources like stack outputs, SSM Parameter Store, and security groups, enabling cross-region and cross-account configurations without hard-coded values, as detailed in the parameter resolvers section.

Works with CloudFormation JSON/YAML, SparkleFormation, and CfnDsl templates, including ERB pre-processing for YAML, providing flexibility in template authoring as explained in the templates section.

Allows restriction of stack operations to specific AWS accounts using the allowed_accounts property, preventing accidental changes in production environments, with options to skip checks via flags.