Windows 10: Windows 10 and Office 2019 Keys Lifetime

Hello. I am considering purchasing keys for both mentioned products, but i dont see a limit in uses/years that the keys will work. So i have some questions about that listed below:
- How exactly do the keys work lifespan-wise?
- Are they locked on my account for whatever number of computers i may change?

I tried searching the forums for a similar case, but cant seem to navigate myself correctly. Any help is appreciated. Thank you in advance.

:)

 

Office 2019

Only supported on Win10. Sorry, 8.1 users, only 4 years old, gotta go.

Microsoft Office 2019 will only work on Windows 10

https://blogs.technet.microsoft.com...-to-office-and-windows-servicing-and-support/

Spoiler Office 2019
Last year at Ignite, we announced Office 2019 – the next perpetual version of Office that includes apps (including Word, Excel, PowerPoint, and Outlook, and Skype for Business) and servers (including Exchange, SharePoint, and Skype for Business). Today we’re pleased to share the following updates:

• Office 2019 will ship in H2 of 2018. Previews of the new apps and servers will start shipping in the second quarter of 2018.
• Office 2019 apps will be supported on:
  • Any supported Windows 10 SAC release
  • Windows 10 Enterprise LTSC 2018
  • The next LTSC release of Windows Server
• The Office 2019 client apps will be released with Click-to-Run installation technology only. We will not provide MSI as a deployment methodology for Office 2019 clients. We will continue to provide MSI for Office Server products.

 

Microsoft Office 2019 Will Run on Windows 10, and Only Windows 10

Office 2016 is supported on all current O/S's until 2025. So, 7 years is plenty of time to phase out all of their previous O/S's. I doubt there would ever be much need to run Office 2019 on a non-Windows 10 computer.

 

Microsoft Office 2019 Will Run on Windows 10, and Only Windows 10

How is this news or surprising to anyone?

Especially when there are viable and arguably better open-source alternatives out there.. For those of us who don't use Microsoft Office, this isn't a problem.