System
From Organic Design wiki
A system is a working description of entities and their interactions; i.e. an abstraction of people and the things they interact with). When a group of people work together in an agreed upon way toward a common vision, they become an organisation. In the context of OrganicDesign the group of people are a trust group and the fundamental kind of organisation they can choose to become is a platform by implementing together the system defined by the platform specification.