CloudFormation template Description syntax
The Description section (optional) enables you to include a text string that
describes the template. This section must always follow the template format version
section.
The value for the description declaration must be a literal string that is between 0 and 1024 bytes in length. You cannot use a parameter or function to specify the description. The following snippet is an example of a description declaration:
Important
During a stack update, you cannot update the Description section by
itself. You can update it only when you include changes that add, modify, or delete
resources.
JSON
"Description" : "Here are some details about the template."
YAML
Description: > Here are some details about the template.
