ZenithOptimedia (ZO) is one of the world's leading media services agency groups, composed of Zenith Media and Optimedia. ZO has over 195 offices in 70 countries, partnering with international and local blue chip clients, including : L'Oreal, Shanghai General Motors, LVMH, China Mobile, British Airways, Meng Niu, Hewlett-Packard and Toyota.

ZenithOptimedia is committed to delivering to clients the best possible return on their advertising investment. This approach is supported by a unique system for strategy development and implementation, The ROI Blueprint. A suite of proprietary ZOOM (ZenithOptimedia Optimization of Media) tools have been designed to add value and insight at each stage of the communication process.