What are the technical implications of choosing asynchronous or synchronous billing cycle?
The "implications" are that it mimics how you want to charge your customer for access. If you want to provide a revolving 30-day access to some content, an asynchronous billing cycle might make the most sense. Whereas if you're charging for a service and want everyone to have the same billing cycle, then you'd end up prorating the first month to get to the first point of your billing cycle.



At a technical level, cron should be running in daemon mode (or at least every 5-10 minutes) since your license provisioning requires it. You shouldn't have to do anything different.