Paul Stevenson has driven the evolution of the O2 brand as a leader in the enterprise space.The challenge was to establish O2, a top 20 consumer brand, as a credible and distinctive player in the enterprise communications market, which is commoditised and has many established competitors.He has found a way to unify the usually disparate disciplines of sales and marketing to create a truly integrated approach to message development and delivery. This integration also allows campaigns to be based on close insights into the customer's world, based on feedback from field-based and desk-based sales teams, as well as research.