Rendered by the Chatterbox XML Ticker my google/ddg foo can't find anything relating to this, so I guess they may have been mistaken [https://www.modern.ie/] is the site, and they offer various Windows / IE combos. There seems to be no restriction on what kind of software may be tested on these VMs, but I'd also ask MS (or a lawyer) whether "testing" usage is "for profit", which is ... ... in turn prohibited by the license. But it might be that "for profit" is "for profit except when testing your own software", implicitly.