Amazon is the biggest e-commerce company in world and it's happening due to its service and support. This company was founded by Jeff Bezos which was selling only books in its starting years. But gradually Amazon made it to one of the most eminent brand in E-commerce industry.
The fact is that paperback books are still the most purchased product online among all items. Amazon's service is really customer centric, and that's what makes it most popular online shopping company.
