Just sharing a quick note, I passed the exam ai-102 on June 10th, 2021. The exam doesn’t cover predictive analytics in SQL like I had hoped, but this exam covers a ton of Cognitive Service scenarios and materials. Primarily on Computer Vision, Conversational AI (translator/speech) and Cognitive Search. It covers the whole gamut of the Cognitive APIs.
From a demand perspective, I’ve experience huge success with predictive analytics like the Length of Stay implementation and QnA chat bots.
So even if you don’t want to take the test in the near future, I highly recommend at least doing the Free-Online Learning Paths on docs online. It may take a total of 3-4 days if you crunch through it.
If you need any help, I’d be happy to go through it with you or help with the material.