Hi Melissa,
I'm the product manager for BigBlueButton and the CEO of Blindside Networks, the company that started the BigBlueButton project in 2009. We provide the Free Tier and Premium tier hosting for Instructure.
> I just presented the Premium Tier to a faculty committee and they are very concerned about what happens if there are more than the allocated number of concurrent sessions, especially if also being used by student groups.
Nothing bad would happen. If you upgrade to the Premium Tier, you pay for a given capacity (measured in concurrent sessions), but we don't hard code any limit.
If you exceed the capacity at any time, everything still works. There is no alarm. There is no indication to any user. It just works.
For the business relationship, if you significantly exceed the capacity for a sustained period (which means it's clear your operating at a much higher capacity than originally estimated), and it's reasonably early in the one year contract, we'll probably come back and ask you to upgrade your capacity for the remainder of the one year term.
You'll note the qualifiers "significantly", "sustained", "estimated", "reasonably", and "probably" -- we're trying to be very flexible and simply make a judgement. I can tell you in all our customers, there were only handful of times we asked them to upgrade as it was clear to us (and them) that the usage was much higher than they anticipated.
Most of the times, the usage slowly increases over time. We want to grow with you, hence the model of charging you only for the capacity you need (and not simply over charging you using a formula based on the size of your school).
As you use the Premium Tier, we will be able to provide you accurate usage data over the 12 month contract period so you can easily estimate the renewal costs based.
> One question was can we keep the free Conferences integration and then allocate by sub-account a Premium Tier conferences integration
Unfortunately, this is not possible -- the settings for Canvas Conferences (Free Tier/Premium Tier) are account-wide.
Regards,... Fred
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