This report presents an overview of the experiences of the very first edition of the Massive Open Online Course (MOOC) on Designing for Communities of Inquiry in Online Courses (DCOI) offered by Athabasca University, Canada in collaboration with the Commonwealth of Learning. DCOIMOOC was held from March 12 to April 15, 2023. It reports the design, development, and delivery of the DCOIMOOC and presents the preliminary findings the participant surveys and their engagements in the course.