Embedded map 3 questions

I have three questions for the Embedded map view (beta).

  1. Dos it only work as mobile apps or can it also be used on web?
    (when I open in preview is say not supported)
  2. If it doesnt work on web what should i do for alternative (map with pins and links that goes to relevant subpages)
  3. If it does work on web, what format does it need for long/lat?