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 103 other categories.
Open AdExchange is leading in Newspapers, Performing Arts, Gambling, Sports and one other category.
Microsoft adCenter Conversion is leading in most countries, including United States, Great Britain, France, Canada and 34 other countries.
Open AdExchange is leading in Denmark, Norway, Sweden, Faeroe Islands and 3 other countries.