Ad Spirit is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Ad Spirit has better usage coverage in more websites categories. Including Sports, Business & Industry, Arts & Entertainment, Soccer and 89 other categories.
GroupM Server is leading in Autos & Vehicles, Makes & Models, Law & Government, Telecommunications and 12 other categories.
GroupM Server is leading in most countries, including Poland, Denmark, Italy, Spain and 18 other countries.
Ad Spirit is leading in Germany, Austria, Switzerland, United States and 14 other countries.