Welcome to the Developer Center for Microsoft Exchange Online as part of Microsoft Office 365. Exchange Online offers new and innovative ways to programmatically access your Microsoft Exchange mailbox.
Learn how to use the Microsoft Exchange Web Services (EWS) Managed API 1.1 with Microsoft Exchange Online to enable a service account to access and use the rights of one or more specified user accounts.
You can use familiar authentication methods with Microsoft Exchange Online to authenticate calls to the Microsoft Exchange Web Services (EWS). This article also provides information about authenticating your EWS calls by using the Autodiscover service.