The Microsoft Exchange Web Services Managed API have 2 main classes, the FOLDER Class and the ITEM Class. All these 2 need a ServiceObject in order to communicate with a Exchange Web service.
The Folder Class
The Item Class
You can see at the TOP of the hierarchy SERVICEOBJECT that is a type of ExchangeService() Object
So what next? let’s see in more detail, what Outlook do if you add a Microsoft Exchange Account?
In this case Outlook will try to resolve thru Autodiscover the domain in the E-mail Address field, and get the Endpoint for the Exchange Web Service, if the credentials are OK, all user configurations and Mail will be attached to Outlook
Service Binding do the same thing, the only difference is that you will assign properties values to a ExchangeService(), and assign user information’s like the Endpoint URL in order to you can use All Objects in the FOLDER and ITEM Class
Let’s see the Method here