Amazon Turns 20

It was originally billed as "Earth's Biggest Bookstore" and featured over one million titles. Twenty years later it boasts over 270m active accounts and claimsto have more than 2m third-party vendors selling millions of products through the marketplace platform. In that time it has been both lauded and vilified, most recently over corporation tax and staff working conditions but Amazon is quite clearly one of the biggest success stories of online commerce. So what has been its lasting impact? Can it maintain this growth or have we seen the best of it?