Co-designed Massive Open Collaborations CoMOOCs are a new approach to providing open online professional development at scale. CoMOOCs invite professionals into a collaborative online space where they can exchange ideas and learn from other professionals. CoMOOCs are hosted on open online platforms – sometimes called MOOC (Massive Open Online Course) platforms – but they are not traditional MOOCs. Instead, CoMOOCs are co-designed with professionals in the communities we want to reach, and they share their insights in videos and case studies, then other participants can contribute their ideas to discussions and collaborative activities.