Adservice Media is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Adservice Media has better usage coverage in more websites categories. Including Business & Industry, Internet & Telecom, Shopping, Arts & Entertainment and 83 other categories.
GroupM Server is leading in Autos & Vehicles, Games, Makes & Models, Automotive Industry and 8 other categories.
Adservice Media is leading in most countries, including Denmark, Norway, Sweden, Finland and 22 other countries.
GroupM Server is leading in Poland, Germany, Italy, United Kingdom and 18 other countries.