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A retail company is planning to migrate its on-premises data center to AWS to scale its infrastructure and reach more customers. The multi-tier web applications will be moved to the cloud and will use a variety of AWS services, IAM policies, and custom network configurations. The requirements can be changed anytime by its Solutions Architect, which means there will be a lot of modifications to the AWS components being deployed. AWS CloudFormation will be used to automate, launch, and version-control the new cloud environment in AWS in various regions. Which of the following is the MOST recommended way to set up CloudFormation in this scenario?