Since the initial publication of “Collective Impact” in Stanford Social Innovation Review (Winter 2011), collective impact has gained tremendous momentum as a disciplined, cross-sector approach to solving social and environmental problems on a large scale. The idea of collective impact is not new—many collaborations pre-date the original article and embody the five conditions of collective impact1—but the original article created a framework and language that have resonated deeply with practitioners who were frustrated with existing approaches to change. Read more here .