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exchangewebservicesoffice365api

What is the differences between Office 365 APIs and EWS

What are the differences between Office 365 APIs and EWS (Exchange Web Services) ?

When do I use one or another?

Solution

  • Office365 API only works for Office365, while EWS works for any Exchange server from Exchange2007 up (including Office365). Other than that:

    • EWS is SOAP, Office365 API REST
    • EWS has a very nice/easy to use managed wrapper for .NET/Java
    • EWS has way more features - similar to using an Exchange client for Office365 compared to the webinterface. Things like Tasks are not in the Office365 API afaik.