Amazon's main headquarters buildings are call "Day 1 North" and "Day 1 South".
That's a reference to Jeff Bezos' belief that we're still only in "day one" of the opportunity for Amazon and the internet. This might seem a little preposterous for a company that's been around for 21 years, but it turns out Bezos is more right than wrong.
This chart from Benedict Evans, analyst at VC firm Andreessen Horowitz, shows why Bezos is right.
E-commerce is only 6% of US
Disclosure: Jeff Bezos is an investor in Business Insider through his personal investment company Bezos Expeditions.