Microsoft adCenter Conversion is leading in Top 100K Sites and Top 1M Sites.
Microsoft adCenter Conversion has better usage coverage in more websites categories. Including Business & Industry, Shopping, Health, Computer & Electronics and 104 other categories.
Open AdExchange is leading in Newspapers, Auctions, Astronomy and Performing Arts.
Microsoft adCenter Conversion is leading in most countries, including United States, United Kingdom, France, India and 38 other countries.
Open AdExchange is leading in Denmark and Sweden.