Office 365
Office 365
Office 365 is the paid plan, it will set up 2013 for you. It depends on your needs—either a one-time fee or an annual charge.
Office 15 from 2013 is available, or you might prefer Open Office. My view is that Office 365 doesn’t offer much value, though a volume license could be an option.
Office 2016 becomes available. You'll receive it when you subscribe to Office 365. If you've already purchased Office in full, regardless of the version—2013, 2010, 2007, or even Office XP—it should function smoothly with your new setup. The only exception is if you bought it on a refurbished machine. For instance, purchasing Office for a Dell, HP, Acer, or similar computer won't allow transfer, since you paid a reduced price.