CloudEvents is a specification for describing event data in a common way. CloudEvents seeks to dramatically simplify event declaration and delivery across services, platforms, and beyond.
Starting NServiceBus V10.1, endpoints can receive messages wrapped in a CloudEvents envelope via the NService.Envelope.CloudEvents package. For more information on configuring endpoints to handle CloudEvents, refer to the CloudEvents documentation.
If you are interested in NServiceBus endpoints being able to send messages using the CloudEvents specification, tell us more about your CloudEvents use cases.