The Chief of Staff (CoS) plays an important role in integrating sustainability into the company's strategy, especially with the new requirements from the EU's Corporate Sustainability Reporting Directive (CSRD). The CoS is responsible for ensuring that sustainability goals are aligned with the company's overall business objectives and that these goals are measurable and traceable. This is done by facilitating workshops, involving management and key personnel, and ensuring that sustainability aspects are considered in all major decisions. The CSRD requires companies to report on how their business model impacts the environment and society, as well as the measures being taken to mitigate negative impacts. The CoS should establish processes for data collection, analysis, and reporting, and ensure that sustainability work is transparent and integrated into the company's governance. By working cross-functionally and with a consensus-driven approach, the CoS can create a strategy where sustainability is a natural part of the company's identity and success.