What is [cmdletbinding()] and how does it work?

Question

According to get-help about_Functions_CmdletBindingAttribute

The CmdletBinding attribute is an attribute of functions that makes them operate like co

Answer 1

CmdletBinding, Parameter etc. are special attribute classes that scripters can use to define PowerShell's behavior, e.g. make a function an Advanced function with Cmdlet capabilites.

When you call them via e.g. [CmdletBinding()] you initialize a new instance of the class.

Read more about the CmdletBindingAttribute class at: MSDN

Read more about the ParameterAttribute class at: MSDN

More about Attribute classes here and here