Office 2016, Number Of Installs?

Though it might be there, I have yet to find the detail re how many computers I am allowed to install Office 2016. And for $150.00 I don't want to guess.

I presume it would be at least two (primary and backup), but is that correct?

 

Ah, now, with thanks to you I found the link/answer. 'Tis not the answer I was seeking, but 'twill serve to further my migration to the iWork suite.