Final answer:
The CloudFormation template will fail because the mandatory Resources section is missing. This section is crucial for specifying the AWS resources that need to be created and without it, CloudFormation cannot deploy the stack.
Step-by-step explanation:
The reason why this CloudFormation template will fail to deploy the stack is that the Resources section is missing. In AWS CloudFormation, each template must have a Resources section where the actual AWS resources that need to be created or configured are defined. Without this section, AWS CloudFormation does not know what resources to create and therefore, the stack cannot be deployed successfully.
Typically, the Resources section is the most important part of a CloudFormation template and it should contain all the necessary resource declarations such as EC2 instances, VPCs, S3 buckets, etc. The provided template has Parameters and Outputs, which can be part of a template but are not sufficient on their own. The necessary resources must be explicitly detailed in the template in order for it to create a functional environment.
Additionally, it is critical to ensure all required elements of a template are present and properly configured. These elements include the AWSTemplateFormatVersion, Description (optional), Metadata (optional), Parameters, Mappings (optional), Resources (required), and Outputs (optional).