Which e-commerce innovation first allowed independent authors to directly self-publish and sell e-books to readers, dramatically disrupting traditional publishing industry gatekeepers?

In the world of arts and literature, retail innovations have dramatically changed how readers discover and purchase books. From traditional bookstores to digital platforms, the journey of literary consumption has evolved significantly over time. This trivia question explores a pivotal technological advancement that transformed how literature reaches its audience. Test your knowledge about the intersection of literary retail and technology!

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

Amazon's Kindle Direct Publishing (KDP)
Barnes & Noble's NOOK Press
Apple's iBooks Author
Smashwords