You get the premium Office software with the Office 365 subscription plans: Word, Excel, PowerPoint, OneNote, Outlook, Publisher, and Access (Publisher and Access are only available on a PC). Office 365 can be enabled across various devices, including PCs, Macs, Android tablets, Android phones, iPad ®, and iPhone ®. Office 365 also comes with services such as 1 TB OneDrive room, 60 Skype minutes a month and support for Microsoft chat and phone. You get the new versions of the software with a subscription, and also receive updates as they happen. Learn more about Office 365.

Office 2019 is a one-time purchase that includes classic PC or Mac applications such as Word, Excel and PowerPoint, and does not contain any of the features that come with an Office 365 subscription. One-time purchases do not have an upgrade option, which means you would need to buy it at full price if you intend to upgrade to the next major update.

By viewing the requirements, you can verify if your computer will support your Office version.

No. Office applications are designed to better function on each system and platform. The Office applications and version numbers available to Mac users can vary from those available to PC users.

Office 365, Office 2019, Office 2016, Office 2013, Office 2010, Office 2007, Office for Mac 2011 and Office for Mac 2008 applications can open your documents without further intervention. Customers using earlier Office versions would need to download and install a compatibility pack.

Internet access is required for downloading and enabling all the new Office suites releases and all Office 365 subscription plans. Internet access is also required for Office 365 plans to control your subscription account, e.g. to install Office on other PCs or to change billing options. Internet access for documents stored on OneDrive is also required, unless you install OneDrive desktop app.To keep your Office edition up-to-date and benefit from automatic updates, you should also connect to the Internet regularly. When you do not connect to the Internet at least every 31 days, your applications will go into reduced functionality mode, which means you can access or print your documents, but you will not be able to update or build new documents. Simplify reactivating your Office software by reconnecting the Internet.

To use the Office software, such as Word, Excel, and PowerPoint, you don't need to be linked to the Internet because the programs are completely installed on your computer.

Users can activate 1 Office 365 Home and Office 365 Personal subscription, and up to 25 Office Home & Student 2019, Office Home & Business 2019, and Office Professional 2019 licenses.