office365 - Does "Outlook Mail REST API" include access to corporate MS exchange server email?

Question

I found in the documentation of the "Outlook Mail REST API" (https://msdn.microsoft.com/office/office365/APi/mail-rest-operations) that it applies to "Exchange Online | Office 365 | Hotmail.com | Live.com | MSN.com | Outlook.com | Passport.com".

Does the "Exchange Online" piece relate to the "Corporate Exchange-based email that does not use Office 365" that is mentioned in the table here (https://support.office.com/en-ca/article/Sign-in-to-Outlook-Web-App-e08eb8ac-ac27-49f4-a400-a47311e1ee7e) or are there other options to integrate with on-premises (Microsoft Exchange Server) corporate email?

Answer 1

The Outlook REST APIs are not yet fully supported for on-premise Exchange installations. A subset of the REST APIs are present in Exchange 2016 today, but we will be bringing much more functionality to on-premise Exchange 2016 REST APIs in the near-future.

In the meantime, if you really need to connect to on-premise Exchange the main option you have is Exchange Web Services and Exchange Active Sync.