Deciding which protocol to use for which service

The key distinguishing factor for our service will be found in the URL of the resource… If our URL looks like X, then it is a Y service, and you use Z tool to get to it

URL Service Type Cmdlet
Ends in .asmx or ?WSDL SOAP New-WebServiceProxy
Contains API, especially api/v2 REST Invoke-RESTMethod
Ends in .php PHP/Form Invoke-WebRequest

REST v. Soap, whats the difference?

Both REST and SOAP are simply methods of accessing information presented via web services. It will suffice to say that REST is now in vogue, and is generally believed to be easier to use and manage than SOAP, which tends to be a bit heavier on XML.

“A nice analogy for REST vs. SOAP is mailing a letter: with SOAP, you’re using an envelope; with REST, it’s a postcard. ”

Resources:

https://www.codeproject.com/Tips/794949/Query-Webservices-with-Powershell

Working with Web Services, SOAP, PHP and all the REST with PowerShell

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