Ask HN: What's inside Amazon's “Internet” browser?

How can it be a mere 2MB? I'm wondering if it works the same way Silk/Opera Mini do, using remote rendering. I have a hard time believing they implemented a new browser engine in such little code - but if they did, I want to know :) Info: https://www.theverge.com/2018/4/17/17249090/amazon-internet-web-browser-app-android-india