In terms of market share, Open AdExchange is clearly lagging behind, losing to Unicast in all segments.
Open AdExchange has better usage coverage in more websites categories. Including Business & Industry, Shopping, Internet & Telecom, Travel and 14 other categories.
Unicast is leading in People & Society, Arts & Entertainment and Performing Arts.
Open AdExchange is leading in most countries, including Denmark, Guatemala, Dominican Republic, Sweden and one other country.
Unicast is leading in Brazil, United Kingdom and India.