Radian6 is happy to announce that Tien Tzuo, former SalesForce.com CMO and current CEO of Zuora, Inc., has joined the Radian6 board of directors.

Tzuo joined SalesForce.com in 1999 as one of the driving forces behind the company’s development. He held a variety of executive roles during his nine years with the company and eventually served as its chief marketing officer and chief strategy officer. Tzuo personally oversaw the vision, direction, and design of Salesforce’s award-winning product line, helping to grow the firm into a multi-billion-dollar company and one of the most successful Software-as-a-Service (SaaS) companies to date.

Currently, Tzuo is founder and CEO at Zuora, a subscription billing leader that helps companies of all sizes build, manage, and grow their subscription businesses. Backed by Benchmark and Mark Bernioff, Zuora was built from the ground up by SaaS industry visionaries and veterans from organizations such as SalesForce.com, WebEx, Postini (now Google), and Oracle.

Tzuo’s experience building highly successful companies and his enthusiasm for helping expand Radian6′s innovation and leadership within the social media monitoring and measurement industry make him an invaluable addition to the Radian6 board.

Please see the full press release for more information about Tzuo and Radian6.