AWS CloudFormation
User Guide (API Version 2010-05-15)
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Template Format Version Declaration

The template format version is an optional declaration that identifies the capabilities of the template format. Because the AWS CloudFormation template format has not changed, there is currently only one value supported: 2010-09-09.

The value for the template format version declaration must be a literal string. You cannot base its value on a parameter or function. If not present, AWS CloudFormation assumes the latest template format version. Here is an example of a valid template format version declaration:

"AWSTemplateFormatVersion" : "2010-09-09"

Note

The template format version is not the same as the API or WSDL version and can change independently of them.