The world unified communications market is a dynamically evolving landscape. Technology is evolving to meet new customer demands in how, when and where they communicate to conduct business. This research service analyzes the development, marketing and sales strategies UC vendors employ to capture the opportunity and tracks the rate of penetration as customers adopt UC. More specifically, this study examines factors driving market growth (market drivers) or deterring market growth (restraints), as well as market and technology trends. It also provides a perspective on the size of the market opportunity in terms of UC clients. Finally, the study includes competitor profiles and an assessment of competitor growth strategies.