Alexa Internet, Inc.
is a California-based company that provides commercial web traffic data and analytics. It is a wholly owned subsidiary of Amazon.com
Alexa toolbar collects data on browsing behavior and transmits it to the Alexa website, where data is stored and analyzed. This is the basis for the company's web traffic reporting. According to its website, Alexa provides traffic data, global rankings, and other information on 30 million websites. As of 2015, its website has been visited by over 6.5 million people monthly.