Sustainability is becoming increasingly prominent on corporate agendas. Once considered a matter of compliance, it is currently viewed as a key to increasing efficiency and a source of competitive advantage as consumer demands for sustainability rise. 90% of executives acknowledge its importance but only 60% of companies have a sustainability strategy. Hence, there is a strong need for Chief Sustainability Officers to interpret changes in the external sustainability environment, work on the strategic consequences and define a corporate strategy to tackle them properly. The Chief Sustainability Officer is responsible for an organization's objectives and initiatives regarding sustainability and the implementation of sustainable strategies.