What is the Autodiscover service in EWS and how does it simplify Exchange resource access?

The Autodiscover service automatically resolves the Exchange Server URL from a user's email address, so you don't have to hardcode the endpoint like `https://test.com/ews/Exchange.asmx`. In code, you use `ExchangeService.AutodiscoverUrl("[email protected]")` to dynamically obtain the correct URL. If Autodiscover is disabled, you can still set the `Url` property directly. This is explained further in the Exchange Web Service (EWS) Development Guide 4 – Auto Downloader.