Ahasanul Kabir Musanna completed the online non-credit course "Marketing in a Digital World" offered through Coursera and authorized by the University of Illinois at Urbana-Champaign. The course certificate confirms Ahasanul Kabir Musanna's identity and participation in the course, as verified by Coursera. It is signed by Aric Rindfleisch, Professor of Marketing and Head of the Department of Business Administration at the University of Illinois at Urbana-Champaign.