PubNub Raises $4.5 Million Series A

Real-time data push and presence cloud service achieves significant customer milestones by removing the barriers involved in creating massively multi-user applications

San Francisco—March 21, 2012—PubNub, the cloud service that enables real-time applications on every device, today announced it has raised $4.5 million in Series A funding, led by Relay Ventures with participation from TiE Angels.

PubNub launched in August 2010 with a cloud service and infrastructure that enables companies to quickly create sophisticated multi-user mobile and web apps that scale globally. The service removes the cost and complexity of developing and hosting apps and games that require real-time data sync. PubNub has been adopted by over 1,000 customers to power mass-audience, real-time, massively multi-user experiences in a variety of industries, including social media, mobile games, business collaboration, and live commerce websites. PubNub has been used in mobile apps synchronized with some of the largest TV events, including during the Super Bowl, Grammys, Oscars, and the Australian Open.

“PubNub is radically transforming how developers build and deploy interactive, presence-based applications,” said Todd Greene, CEO of PubNub. “Relay Ventures’ sharp focus on mobile combined with the deep bench of successful entrepreneurs from TiE Angels has produced a highly effective investment team.”

The PubNub service connects to all popular mobile, web, and server environments with over 20 popular PubNub plug-ins, including iOS, Android, JavaScript, Blackberry, Windows Phone, Node.JS, Python, and Ruby and many more. PubNub’s real-time cloud service is deployed in data centers globally, delivering multi-region reliability and low- latency connectivity from any point on earth.

“PubNub is a great example of a lean startup done right. This team developed impressive core technology based on the needs of an enthusiastic customer base, and now is the clear leader in market,” said John Occhipinti, partner at Relay Ventures. “With this injection of capital, there are tremendous opportunities ahead for PubNub.”

About PubNub:

PubNub is a revolutionary cloud service for building massively scalable real-time apps for mobile and web. PubNub provides a globally deployed, presence-based Infrastructure-as-a-Service designed for use in every popular mobile and web platform. Thousands of websites and mobile apps rely on PubNub for delivering large-scale interactive experiences that scale to millions of users worldwide. PubNub is a venture- backed company headquartered in San Francisco, CA. For additional information, visit

About Relay Ventures

Relay Ventures is an early stage venture capital firm that invests in passionate entrepreneurs disrupting and creating new markets through mobile technologies. Unlike other funds, Relay exclusively focuses on software for mobile devices and the connected Internet, creating an unparalleled set of networks and resources that tangibly help founders build world-class companies. With offices in Menlo Park and Toronto, the firm is active throughout North America. For additional information, visit


Wendy Schott
VP Marketing
(415) 735-1782 | wendy(at)pubnub(dot)com

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