Vehicle telematics data exchange is provided. A system may include a message publisher and a message recipient. The message publisher may be configured to identify a message to be published to a topic of a topic tree maintained by a message broker, the topic being associated with a type of the message identified to be published and an intended recipient of the message; pack data elements into the message according to a name/value pair message schema of the system; and publish the message via the message broker to the topic.