In a rapidly evolving business landscape, sustainability has become a pivotal force, compelling organizations to address pressing global issues like climate change, social equity, and digital governance. The emergence of the Chief Sustainability Officer (CSO) role signifies the professionalization of sustainability functions within companies. To equip CSOs with the essential skills needed to drive meaningful sustainability transformations across diverse business functions, the ModularMaster Certificate in Sustainability offers a comprehensive and transdisciplinary program. It encompasses the full spectrum of sustainability topics, from devising sustainability strategies to mastering ESG reporting, sustainable design, and transformation, ensuring that CSOs are well-prepared to navigate the complex and evolving sustainability landscape. This in-depth program, comprising six intensive 5-day courses, provides CSOs the flexibility to pursue individual modules at their own pace, leading to a Graduate Certificate and ultimately a ModularMaster (MM). With contributions from esteemed industry practitioners, participants will gain access to cutting-edge expertise through real-world case studies and hands-on practice, making this program truly best-in-class.