Actions on Google is a developer platform that lets you create software to extend the functionality of the Google Assistant, Google’s virtual personal assistant, across more than 500 million devices, including smart speakers, phones, cars, TVs, headphones, watches, and more.

Users engage Google Assistant in conversation to get things done, like buying groceries or booking a ride (for a complete list of what’s possible now, see the Actions directory.) As a developer, you can use Actions on Google to easily create and manage delightful and effective conversational experiences between users and your own 3rd-party fulfillment service.

For the Machine Learning part,its a continuation of how to integrate ML kit with fire base in our apps...
See you there.....!!!