Thanks for the questions!
30 hours/month of GLC is free on EC2 for on-demand production work (e.g. 1hr batch job/day launched through the deploy module or some time to test out predictive services). You of course get unlimited time to do your development, wherever is most convenient.
- Nope, you can run GLC Develop wherever you like, whether on your laptop, local server, or remote machine in EC2.
- 30 hours/month is the total free time, regardless of how many machines you run, after this, you pay the on-demand pricing, per machine. Again, this is only for production work.
- Usage is measured by Amazon. In the future, we'll likely monitor ourselves, but for now Amazon is doing some of that for us.
I hope this answers all your questions.
We're more than happy to follow-up personally on any of this. Just shoot a note to email@example.com.