AWS CFT describes all AWS resources and their properties in JSON or YAML format. Templates can be written using any text editor. It is recommended that you give relevant and meaningful filenames to each template. Template extensions can be .json, .yaml, or .txt. When these templates are executed, the defined AWS resources are created in the respective AWS account. You can either upload the template to an S3 bucket and specify the template URL or you can upload the template file using the browse button in the template creation wizard. Even if you upload the template file using the browse button in the template creation wizard, it is internally stored in S3. The following diagram helps us to understand this:
Figure 15.1: The AWS CloudFormation flow
While creating a stack, if the template path is pointing to the local machine, then it will automatically...
