The “solution landscape” presents a menu of potential options for cities to address their key sustainability challenges. Lynch said one of the main success factors is the opportunity for direct and open dialogue. “Business adds value by being involved in the beginning, looking at the big plan, and looking at the issues landscape and challenges,” he said. WBCSD decided to work with multiple companies as opposed to a more ad hoc engagement to encourage the idea that it was business, not just individual companies working with cities.