The Asian Infrastructure Investment Bank (AIIB) is a multilateral development bank (MDB) conceived for the 21st century. Through a participatory process, its founding members are developing its core philosophy, principles, policies, value system and operating platform. The Bank's foundation is built on the lessons of experience of existing MDBs and the private sector. Its modus operandi will be lean, clean and green: lean, with a small efficient management team and highly skilled staff; clean, an ethical organization with zero tolerance for corruption; and green, an institution built on respect for the environment. The AIIB will put in place strong policies on governance, accountability, financial, procurement and environmental and social frameworks.