Is it IAB RTB compliant: https://code.google.com/p/openrtb/ ?
Can they take on 1-10mm/hour mobile/desktop demand from another exchange/ad network ? (looks like they did that with AppNexus)
Or is it just a supply side portal for MSFT sites?
In layman's terms, does this exchange work in full duplex, or is it half duplex against MS websites like Bing and Skype ads?
Or is that all just a terrible secret that only sales can convey to you?