Function diff 

pub async fn diff(name: StringWithOnlyAlphaNumericsAndHyphens, stack: Stack)

Creates a diff that will show what ids are being added / removed to an existing stack, as well as showing ids that remain without being added or removed. Currently, the diff does not show modifications to resources.

Parameters

• name - The existing CloudFormation stack name
• stack - The new stack

AWS Credentials

This function requires valid AWS credentials. The AWS credentials must have permissions for:

• cloudformation:DescribeStacks, cloudformation:GetTemplate