Parameters

Template Parameters

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• accept user input - console/ CLI/ API when a stack is created or updated
• can be ref. from within logical resources, influencing physical resources/ configuration
• can be configured with defaults, allowedvalues, min/ max length, allowedpattern, type

Pseudo parameters

• have been defined by AES and provided when creating the stack
• eg AWS::Region, AWS::StackID, AWS::StackName