How does node assignment work?

[mauricio23]

When a user first logs into ServiceNow, they are assigned to a node.

What is the logic for this assignment to a node? Is it round robin? Or does it assign the user to the least busiest node? Or some other logic?

[adilrathore · Accepted solution]

ServiceNow routes all incoming transactions through a load balancer inside the ServiceNow SaaS network. If a transaction contains a certain cookie (provided in a previous response), then the load balancer sends the transaction to the application server specified in the cookie. If the cookie is not provided, then the transaction is arbitrarily routed to one of the nodes in the cluster based on an algorithm in the load balancer.

Check Session Handling section in the below doc:

Inbound integrations performance design on the ServiceNow platform