Techniques for scaling workflow campaigns

A computer-implemented method for processing a workflow campaign, the method comprising:

• receiving, from a first message queue that is associated with a first node of a workflow campaign, a first message that corresponds to a first user arriving at the first node of the workflow campaign;
• causing one or more actions associated with the first node of the workflow campaign to be performed with respect to the first user based on the first message;
• determining that the first user should be progressed from the first node of the workflow campaign to a second node of the workflow campaign;
• in response to determining that the first user should be progressed from the first node of the workflow campaign to the second node of the workflow campaign, generating a second message that corresponds to the first user arriving at the second node of the workflow campaign;
• determining a second message queue that is associated with the second node of the workflow campaign;
• and
• transmitting the second message to the second message queue to progress the first user from the first node of the workflow campaign to the second node of the workflow campaign.