...

Alexa Internet, Inc. is a California-based subsidiary company of Amazon.com which provides commercial web traffic data. Founded as an independent company in 1996, Alexa was acquired by Amazon in 1999. Its toolbar collects data on browsing behavior and transmits it to the Alexa website, where it is stored and analyzed, forming 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, and as of 2015 its website is visited by over 6.5 million people monthly.