IIM Lucknow programs emphasize extensive case-based discussions, presentations, and role-plays to initiate an interactive learning environment. So, professors use cases from all B-schools across the world.
All the case studies are available on the website of HBS and can be purchased. But it will not add any value to the students until debated in the classroom with experienced professors and diverse opinions of the students. The ultimate motto is to use the best cases to preview the real-life application. Harvard cases are considered to be one of the best management cases in the world.