Pathomation has a licensing model based on user concurrency. We acknowledge at the same time that there are a number of scenarios where you can have a LOT of concurrent use of the software:
In all of these cases, traffic is expected to be increase gradually in the days leading up the event, then spike during the event itself, to peter off again afterwards.
The exception are the college students: expect to only see traffic the night before the midterm or final exam.
Joking aside, it is very hard also in each of the above scenarios to predict how many concurrent licenses you would actually need. Will all of your students consult the site at the same time? Will all conference visitors attend your talk?
Sure, we would love to sell you the maximum number of concurrent seats, but that would possibly result in your best case scenario becoming a worst case financial scenario.
So here's what we do:
Are we crazy then? Why does this work? Here are a couple of reasons: