There are dozens upon dozens of companies doing exactly this sort of service for AWS. And they all use the describe API calls requiring IAM permissions.
It was instructor-led workouts for me where I could also measure my progress.
I've loathed working out. I'm not a gym sort of person. I tried watching Netflix and YouTube, and listening to Spotify, etc on the treadmill and always had poor results.
I use an iPad to watch the Fitness+ instruction and tying that to my Watch is just what I need.
I went from hating the treadmill to loving it because of Apple Fitness+. Scott Carvin is the instructor I use the most and he's amazing. I also use Anya for rower workouts and she's amazing too.
I'm wondering if a startup will come along to turn this concept into a creator-instructor marketplace that ties into Apple Watch, etc.
It's amazing. Get it if you're interested in this topic.