TERP has hired Revax with the NSF grant money and Renato does all our systems admin, and teaching me how to do site admin. The platform is hosted at Digital Ocean, our domain name is purchased through godaddy, and that’s about all I know. In other words, Renato or someone else from Revax would need to answer that part of this question.
I will say that we use Canva EXTENSIVELY to make images and other visual content, but this isn’t integrated, there is no interface. We don’t use zotero, either.