How would you define Alexa
 

Alexa is a California based subsidiary company of Amazon.com which is widely known for its website and toolbar. This Alexa toolbar congregates browsing behavior data and send it to website, where the data is analyzed and stored and create reports for company’s web traffic. Also, Alexa provides data concerned with traffic, global ranking and other additional information for a website.

Alexa is giving ranks for website as per global and as per country based on the traffic for the website.

Alexa Internet, Inc. is a California-based company that provides commercial web traffic data. It is a subsidiary of Amazon.com.

Founded as an independent company in 1996, Alexa was acquired by Amazon in 1999. Its toolbar collects data on browsing behavior and transmits them to the Alexa website, where they are 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

Alexa rank is calculated using a combination of the estimated average daily unique visitors to the site and the estimated number of page views on the site over the past 3 months.

Alexa is one of the smaller Internet search engines, Alexa offers a free true bar as an add-on for the MS Internet Explorer by which a user can gain access to traffic data about the site he is just visiting. Alexa’s definition of reach (1st row below the graph) is “the percentage of all Internet users who visit a given website.

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