The stack described by this AWS CloudFormation Tutorial template is a set of AWS resources to be deployed in tandem. The template is used to specify which AWS resources will be included in the final stack. Resource types can range from Amazon Elastic Compute Cloud instances to Amazon Relational Database Service DB Instances and beyond. You can spend less time worrying about the infrastructure supporting your applications that run in AWS thanks to AWS CloudFormation, a service that aids in the modeling and configuration of your AWS resources. To use CloudFormation, you simply need to create a template that describes the AWS resources you require (such as Amazon EC2 instances or Amazon RDS DB instances), and CloudFormation will automatically create and set up those resources for you.