Which flow type is triggered upon receiving a platform event message?

The flow type that is triggered upon receiving a platform event message is the Platform-Event Triggered flow. These flows are specifically designed to respond automatically when a platform event is published, allowing for real-time processing of that event.

Platform events facilitate the communication and exchange of information between various parts of a Salesforce organization as well as external systems. They are an integral part of Salesforce's event-driven architecture, ensuring that processes can be initiated in response to data changes or triggers without manual intervention.

Using a Platform-Event Triggered flow, organizations can automate responses to events such as updates or creates in a real-time manner, thus enhancing the efficiency of their operations. This flow type allows administrators and developers to craft flows that react dynamically to external signals, making them highly relevant in scenarios where immediate response is critical.

Other flow types such as autolaunched, screen, and scheduled flows have different purposes. Autolaunched flows are designed to be initiated by other processes but do not have a direct trigger from events. Screen flows require user interaction and are meant for guided interactions, while scheduled flows run at specific times or intervals, rather than in response to instant events.