1. A method comprising: at a multitenant communication platform, receiving a trigger configuration creation request from an account and storing a trigger configuration of the account, wherein the received trigger configuration includes a callback uniform resource identifier and a trigger condition; operating the multitenant communication platform comprising internally facilitating a communication on behalf of an account and publishing at least one event when facilitating the communication; at the platform, incrementing a counter in response to the at least one event if the stored trigger configuration of the account specifies a usage key associated with a category of counted events of the at least one event; monitoring counters in a context of an associated trigger; and processing the trigger, wherein processing the trigger comprises transmitting a request to the callback uniform resource identifier of an application server outside of the multitenant platform, upon the counter satisfying the trigger condition of an associated trigger.