Which product design innovation did Amazon first introduce in 2007 that revolutionized the book industry by making digital reading mainstream?

The publishing industry has undergone massive changes in the digital era. Traditional bookstores have faced existential challenges while new platforms have emerged to connect authors directly with readers. This poll tests your knowledge about a significant product design innovation that changed how millions consume literature and disrupted the traditional retail book market.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Kindle e-reader
Audible audiobook platform
Goodreads social reading network
Kindle Direct Publishing (KDP) self-publishing platform