MLaaS and ROS

Hi all,

Just wondering which MLaaS (IBM Watson, Amazon ML, Microsoft Azure ML, Google AutoML) is best to look at for integration with ROS/ROS2

I can see that Amazon has this particular diagram


https://robomakerworkshops.com/jetbot-ml-workshop/build/

And there are mentions of integration of IBM Watson and ROS on the NASA Robonaut?

What are people using and are there some reference projects/repos?

Cheers