Advertising.com
798,259 websites

Advertising.com is free to use

http://www.advertising.com/

Advertising.com combines the industrys most advanced technology, precise targeting and a quality network to deliver results for advertisers & publishers.

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Amazon A9
1,192,626 websites

Amazon A9 costs money

http://www.a9.com/

A9 manages product search and advertising technologies that are scalable, highly available, and cross-platform for Amazon and other clients.

Market Share by Top Websites

1 Amazon A9 is leading in The Entire Web.

2 Advertising.com is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.

Websites Categories

1 Amazon A9 has better usage coverage in more websites categories. Including Arts & Entertainment, Science & Education, Computers Electronics & Technology, Games and 20 other categories.

2 Advertising.com hasn't got a lead over Amazon A9 in any websites category.

Geography

1 Amazon A9 is leading in most countries, including United States, France, Taiwan, Italy and 145 other countries.

2 Advertising.com is leading in Russia, Ukraine, Czech Republic, Bulgaria and 10 other countries.