As there has been a bit of talk about archiving lately and the new Archive Folder vs the Online Archive in Office365 https://support.office.com/en-us/article/Archive-in-Outlook-2016-for-Windows-25f75777-3cdc-4c77-9783-5929c7b47028?ui=en-US&rs=en-US&ad=US and https://www.petri.com/exchange-online-archive-options .I'd though I'd do a post about the Archive Item operation in EWS which was introduced in Exchange 2013 and is an interesting lever for admins to use if they want to look a manually archiving items to a Mailboxes online archive without using Archive Policies. The Archive Item operation is basically designed to allow you to move items from the Primary to the Online Archive more easily instead of having to batch a Move operation. To use this operation you need to enumerate the Items you want to archive (using a search filter or other restriction) and then provide that as one of the inputs for archive Items as longs a...
Pushing the Envelope in Messaging and Office 365 Development