This is a very interesting topic which is still in the grey area. TOS says no but there are still so many famous youtubers putting up their amazon affiliate links without getting banned. Hmm...
I'm also doing YouTubing and always put a Amazon link to YouTube Description. But I hide Amazon link using my blog domain and redirect all link to Amazon products.
To use domain names on the description can you redirect the hyper link or do you have to have individual domain names.
You are not allowed to post affiliate links in Youtube description but many influencers do it. Youtube just don't have a tool to track down affiliate links so they gets pass making commissions on Youtube videos.