Select your cookie preferences

We use essential cookies and similar tools that are necessary to provide our site and services. We use performance cookies to collect anonymous statistics, so we can understand how customers use our site and make improvements. Essential cookies cannot be deactivated, but you can choose “Customize” or “Decline” to decline performance cookies.

If you agree, AWS and approved third parties will also use cookies to provide useful site features, remember your preferences, and display relevant content, including relevant advertising. To accept or decline all non-essential cookies, choose “Accept” or “Decline.” To make more detailed choices, choose “Customize.”

CloudFormation template format version syntax

Focus mode

On this page

CloudFormation template format version syntax - AWS CloudFormation
Filter View

The AWSTemplateFormatVersion section (optional) identifies the template format version that the template conforms to. The latest template format version is 2010-09-09 and is currently the only valid value.

The template format version isn't the same as the API version. The template format version can change independently of the API versions.

The value for the template format version declaration must be a literal string. You can't use a parameter or function to specify the template format version. If you don't specify a value, CloudFormation assumes the latest template format version. The following snippet is an example of a valid template format version declaration:

JSON

"AWSTemplateFormatVersion" : "2010-09-09"

YAML

AWSTemplateFormatVersion: 2010-09-09
PrivacySite termsCookie preferences
© 2025, Amazon Web Services, Inc. or its affiliates. All rights reserved.