The reason why Walmart and Amazon are leaders of retail

Shopping has been made highly easy by Amazon.com. For its main customers, it requires only a couple of clicks for making a purchase that would arrive at their place within a day in most of the cases. The firm has also brought innovation in its Amazon Go retail stores, where customers can do payment for the items they buy automatically without going through the tiring procedure of standing in a checkout line.

Alike efforts have been d....