AWS has acquired many companies in the past. Off the top of my head, Biba (turned into Chime), Elemental, Cloud9, Annapurna, CloudEndure…I’m sure there’s more.

Alexa is basically 3 tech acquisitions glued together. Ivona (TTS), Evi (Knowledge graph), and Yap (speech recognition).

You forgot Alexa.com, for both the product and the name. (in mindshare at least)

A9

Former A9 employee here. A9 was not an acquisition - it was bootstrapped as a Bay Area subsidiary. Initially A9 focused on web search, then pivoted to doing product search for Amazon retail.

Scroll to the bottom of the “my account” page for example and you’ll see a list of dozens of wholly owned subsidiaries and websites, many of which were purchases.