PubNub is a global Data Stream Network (DSN) and realtime infrastructure-as-a-service (IaaS) company. The company's cloud-based platform provides a real-time messaging service that enables developers to build and scale real-time applications and IoT devices. PubNub was founded in 2010 and is headquartered in San Francisco, California. The company's platform is used by thousands of customers worldwide, including Atlassian, Peloton, and RingCentral.