My two cents: Looking at the Vantage site info http://vantageled.com/sminfinity/ it appears that the sign gets the (any) RSS feed via their cloud software. Breezy would need to put an RSS feed on his website and point the vantage cloud software to the url. An RSS feed is simply an xml page which WD could generate as a custom webpage using existing functionality see https://www.w3schools.com/xml/xml_rss.asp