In an effort to recruit new users, the company is offering 100 GB of space for free for one year to any Dropbox user who installs OneDrive.
You also have to have a Microsoft account to sign up. If you do, you can verify that you have a Dropbox account and then get your free space here.
Wanna see which cloud storage service is right for you generally?
Check out our handy write-up about the pros and cons of each.