License key question

Hello,

I have a public-facing development IDE (Cloud9) that I've been developing my site on. I had to purchase a Perch license because the IDE can be accessed publicly. I'm getting ready to deploy the site to a staging site, then later on to the live production site.

I'm wondering if the one license key I purchased for the dev site will still serve for all three sites, as I plan to have the three (or at least two) of them running simultaneously. Could someone please let me know if I need to purchase another license?

Thanks,

Lori