Microsoft has signed a partnership agreement with Dropbox that will see the pair work together to offer integration between Office and Dropbox.
Microsoft said it had made the move in response to the 1.2 billion users of Office that use Dropbox to host a staggering 35 billion Office files. Integration between the two will improve the use of both services for millions of users.
Three specific capabilities will be added to the iOS and Android Office apps in the coming weeks.
Firstly, it will be possible to access Dropbox content directly from the Office app, and secondly to edit Office files from within Dropbox.
Lastly, files can be shared to Dropbox via the Office apps in a move that should improve collaboration among Office businesses using Dropbox for file storage.
These capabilities for Dropbox on the web and Office Online will be made availabile in the first half of 2015.
As part of the deal Dropbox will make its application available on the Windows Phone and Windows tablet platforms in the coming months.
The fact that the update is coming to the mobile versions of Office first, rather than the web, underlines how central mobile has become to vendors and the market as a whole.
Indeed, Microsoft CEO Satya Nadella cited the partnership as a prime example of his cloud-first, mobile-first mantra.
"In our mobile-first and cloud-first world, people need easier ways to create, share and collaborate regardless of their device or platform," he said.
"Together, Microsoft and Dropbox will provide our shared customers with flexible tools that put them at the centre of the way they live and work today."
The integration with Dropbox could be seen as surprising, given that Microsoft already has its own storage product, OneDrive, and would undoubtedly rather people used this platform to store and access content.
However, the deal shows Microsoft recognising that it cannot exist in isolation in the cloud storage and collaboration market, as businesses and their employees frequently use numerous platforms and want to move between them at will.
As such, Microsoft knows it cannot operate within a silo as it would risk alienating customers who are voting with the content around which products they want to use.
Furthermore, the deal underlines the strength of Dropbox in the enterprise market, as integration with Office underlines that those storing content in Dropbox are users of Microsoft's suite of business tools.
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