A system and method for triggering on platform usage can include at a platform, receiving and storing a trigger configuration of an account; operating a platform comprising internally executing a process on behalf of an account and publishing at least one event when executing the process; at the platform, incrementing a counter in response to the at least one event and if the stored trigger configuration species 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 upon the counter satisfying condition of an associated trigger.