They first screen you based on you resume and cover letter. If successful they invite you to conduct some online test where they monitor your answer to communication and analytical questions If successful they invite you for the first round of interview with consultants for a case study. They show you a prompt and give you 30 minutes to write a report detailing your answer to the question. Then they come back on the call and ask you some question so you can justify your report. They also ask you some questions more about your experience and fit with the company towards the end