I have come to ask the same question, of sorts. I am a designer working for our hotel company internally, we have a web design agency building our website front end for us, so I have zero issue hosting fonts on our site. However, we also use a couple of 3rd parties for our booking engine and gift sales, and even though the customer should see no difference from using our website and clicking through to the booking section or gifts section, do we still need another licence for the 3rd parties, or as it is our product, does it all come under our licence through creative cloud? I need to use 2 font families.
All linked to daniell8583311's question and would be good to have clarity of both, linked, issues.