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.

VS

Index Exchange
1,056,822 websites

Index Exchange is free to use

https://www.indexexchange.com/

Index Exchange is a provider of online media solutions. With a network reach of over half the US digital audience. Previously known as Casale Media.

Market Share by Top Websites

1 Amazon A9 is leading in The Entire Web.

2 Index Exchange 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, Community & Society and 8 other categories.

2 Index Exchange is leading in Games, News & Media, Food & Drink, Adult and 8 other categories.

Geography

1 Index Exchange is leading in most countries, including United States, Russia, France, Japan and 127 other countries.

2 Amazon A9 is leading in Spain, Indonesia, Philippines, Peru and 30 other countries.