I think the target audience, is individuals or small teams who want to have an organized workflow, immutable and reproducible experiments with an organized and easy way to access logs and outputs.

The platform also provides a lot of automation to schedule concurrent experiments.

There are a couple of things that need to be polished to be used, notes on experiments, notification of finished experiments, especially if you are running hundreds of experiments.

Depending on how organized you are, many times you will end up with experiments that you did not know how you started, having a platform that takes care of that could be beneficial.

If you have already a cluster, for running your experiments you will most probably end up ssh-ing to the machine to check which experiments finished, probably in a screen, and their results and logs, Polyaxon simplifies that part as well.