We have around 30 desktops and 15 laptops at my workplace. They are all on Windows 7 pro 64bit. 

We will want to upgrade to Windows 10 pro in about a years time but at the moment, we use a piece of software that is integral to our business but does not run on Windows 10. This software is being re-written for release in about 9 - 12 months.

How could we go about reserving the upgrade but not actually upgrading?  

 I do not want to release the update through WSUS that allows users to click the 'Get Windows now' icon and reserve the upgrade that way as I do not trust them to not try to upgrade there and then. 

I have thought about the possibility of following the process in [this](http://www.howtogeek.com/253901/get-windows-10-for-free-after-july-29th-with-a-little-prep-now/) article:-

1. Back up W7 install
2. Install W10 and activate license
3. Revert to W7 backup

Would this be the best way? It seems like a lot of time and effort to do every computer this way.