Amazon is making huge physical bets in defiance of the retail apocalypse

$4 has become synonymous with online shopping.

But the online giant is increasingly moving into the physical world, opening spaces in malls, shopping districts, and even local strip malls. It's a move that signals the company's ambitions are larger than ecommerce.

One reason that may be, $4, is that Amazon is seeing online sales go up in areas that have physical stores. Brick-and-mortar stores increase customer awareness of the brand, and it's extra fuel for the Amazon engine.

Here are all the ways that Amazon has expanded into the physical world so far.