Microsoft has made a huge push to make their software more open with other platforms and tools, making the whole user experience with things like Office apps more efficient and pleasing. It started with offering up Microsoft Office for Android so users could take their Office files from Word, Excel, and Powerpoint on the go, and then last year Microsoft announced they were opening up Dropbox integration to the Android apps so that users could easily and seamlessly back up and store their files in the cloud even if you didn't use Microsoft's own OneDrive cloud storage service. Not everyone uses Office through the mobile apps though. Some people have stuck with using Office Online, making the process of backing up your files to Dropbox a little less convenient, although not impossible.
Today Microsoft is unleashing the same Dropbox integration that Office for Android users have had since last year on the users of Office Online, which means if you use Office Online from your Chromebook and also have Dropbox as one of your go-to cloud storage services, backing up and storing your files just got easier. As of today you should be able to add your Dropbox account into Office Online allowing you to browse, open, and edit your Office files.
It doesn't stop there though, users can get the same access of their Office files from within the Dropbox web interface too, meaning you can open a file within the Dropbox webpage and access Office Online right from the Dropbox file without having to navigate out of Dropbox. It's great to see Microsoft making things available from both ends, so no matter what tool you're working with at the time you can access the other without having to back out of what you're already doing. If you want to give things a try, pop into Office Online and create a new document, then have it automatically backed up to Dropbox as long as the account is already integrated. Or, if you already have an Office document saved in Dropbox, open it up in the Dropbox web portal and then click top open up Office and work with the file their to get yourself acquainted with the process, which shouldn't take much time.