The software is installed once-off on every workstation and licenses are purchased for additional users instead of having to purchase the software per seat.

For example, Office 2016 Professional is the full office suite and Office 2016 Home and Student is a lighter version excluding some applications.

The applications available to the user depend on the bundle type purchased.

Office 2016 applications such as Word, Excel, PowerPoint, Publisher, and Access can be installed as separate apps if the entire office suite isn’t required. Office 2016 is Microsoft’s latest version of the well-known desktop office suite with access to OneDrive for cloud storage.

Depending on your subscription plan, Office 365 lets you work in the cloud or locally.

It is mandatory for users to have a Microsoft Account to gain access to Office 365.

It allows access to a variety of cloud services and Microsoft’s office applications (Office 2016) which can also be installed locally across multiple devices to allow for working offline.

The software is installed only on one machine, but the user changes several times his computer over his life.Office 365 is a Microsoft product that offers a cloud-based office solution using subscription plans. My question is also if in Microsoft's jargon 'installation' an 'activation' are synonyms, or on the contrary if 'installation' mean the number of devices installed at the same time, so that the number of activations in a lifetime could possibly be higher. As far as I know, this possibility was removed with later versions of Office. I believe Office 2020 Home & Business was installable one two computers at the same time (typically one desktop and one notebook). the unlimited version, box-packaged version, also known as FFP or Retail. I'm telling about the permanent and transferable version of Microsoft Office 2019 (not 365), i.e. Where can I find a similar information for Office 2019? This link shows how many installations were possible for Office 2010:

Office 2016 for 3 computers