This document discusses open innovation ecosystems and provides examples of existing ecosystems. It describes open ecosystems as environments that develop collaboration between stakeholders to produce and manage shared resources through experimentation and consensus building. It notes that ecosystems connect different types of stakeholders and share mutualized and open resources. Principles for efficient ecosystems include being action-oriented, having inclusive and transparent relationships, decentralization, and using open source models. The document provides examples of existing innovation ecosystems in various industries and details their growth and impact.