What Amazon innovation might suggest replenishment of a previously ordered item, facilitate the purchase of a tool that the shopper is missing for a DIY project, or even recommend alternatives to consistently purchased products and brands?

Alexa

Explanation:

Amazon Alexa is an artificial intelligence used by on Amazon as a virtual assistant.

Alexa can play music, home automation, allow users to order from Amazon, give information, and provide advise based on previous buying patterns.

As Alexa is constantly improving based on observed user behaviour it can be used to suggest replenishment of a previously ordered item, facilitate the purchase of a tool that the shopper is missing for a DIY project, or even recommend alternatives to consistently purchased products and brands