what you need to know about aws cloudformation

  1. CloudFormattion is free to use;
  2. You supply a template and any required parameters to CloudFormation to create or update a stack;
  3. A template is a JSON-formatted text file (example);
  4. Parameter can be used to specify sensitive information which you don’t want to store in the template;
  5. If not all resources are created or updated successfully, CloudFormation will rollback every change;

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