Concurrency is the limit that produces the worst customer experience when you hit it, because the failure is immediate and audible: the caller gets your busy behaviour instead of your agent.
A Concurrency Pack adds ten reserved simultaneous conversations to your subscription. Reserved means exactly that — the capacity is held for you rather than drawn from a shared burst pool, so behaviour at your busiest minute matches behaviour at your quietest.
Packs are billed monthly alongside your subscription and can be removed at the end of any billing period, which makes it practical to scale up for a season and back down again afterwards.
