Note: This release is in preview. Features described here don’t become generally available until the latest general availability date that Salesforce announces for this release. Before then, and where features are noted as beta, pilot, or developer preview, we can’t guarantee general availability within any particular time frame or at all. Make your purchase decisions only on the basis of generally available products and features.

Reference

The reference documentation for platform events covers an API object, Apex methods, limits, error codes, and standard platform events.

Check out this object in the Object Reference for the Salesforce Platform.

EventBusSubscriber

Check out these Apex resources in the Apex Reference Guide.

EventBus Class in the System namespace
TriggerContext Class in the EventBus namespace

Check out these resources about limits, error codes, and standard platform events.

Platform Events Developer Guide

Reference