Remember that much of what is sold on Amazon.com is not actually sold by Amazon. Amazon provides warehousing and fulfillment and an online storefront for third

Remember that much of what is sold on Amazon.com is not actually sold by Amazon. Amazon provides warehousing and fulfillment and an online storefront for third party sellers as well as for itself. The tools that it uses to run that online storefront in the form of AWS are used by many non-Amazon websites as well. The Kindle ecosystem helps Amazon sell retail books but also provides a self-publishing platform. It's not unreasonable to say that logistics, warehousing and web services are the real business, and that Amazon's retail business is one of many customers.