Same folks presented DREAM stack and some use cases at Ray Summit last year: https://www.youtube.com/watch?v=zaaKT0IyutQ. and https://www.youtube.com/watch?v=McjH0WfdAyI

I didn't write this post. But I work with the guys

We've been doing data science and ml for years. After iterating on our tooling for a few years, we've finally settled on some tools that we're happy with. A lot of the wins came from spending more time data with DS teams to understand what they really wanted tbh

And ray has been great!