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    Resource Orchestration Service:Fn::Max

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    Resource Orchestration Service:Fn::Max

    Last Updated:Jun 17, 2026

    Fn::Max returns the largest number from a list of numbers.

    Declaration

    • JSON

      {
 "Fn::Max": [Number1, Number2, ...]
}

    • YAML

      • Syntax for the full function name: 

        Fn::Max:
 - Number1
 - Number2
 - Number3
 - ...

      • Syntax for the short form: 

        !Max [Number1, Number2, ...]

    Return value

    The largest number in the list.

    Examples

    !Max [1.1, 2, 3]

    The following result is returned:

    3