In comparison, rival Flipkart saw 16.4 crore visitors to its web and mobile sites combined, while Snapdeal saw 10.9 crore visitors in October.

An annual comparison shows that Amazon has also seen the most rapid growth in one year between November 2014 to October 2015. Amazon India saw a wide arc in its growth from 8.5 crore visitors last year to over 20 crore this year.

Flipkart, which was leading the pack last year with 14 crore visitors in October 2014, stood at about 16.3 crore visitors in October 2015, the data shows. Snapdeal saw a marginal growth from about 9 crore visitors, to about 11 crore visitors in the one year period.

Interestingly, even as more than 70 per cent of sales for Amazon reportedly take place through the mobile application, the company saw more than 30 million unique monthly visitors on the desktop site in October.