Hi there,

I know we already discussed this in the private messaging area, but I'll give the gist of it as other candidates may benefit from this (and can reach out for more details, particularly because this can be slightly different according to the very specific position one is applying to).

It works the following way: they give you a slide deck with a lot of details about the company (financials, clients, products, etc.), the market (market size, growth, segments, etc.), the competitors any other other relevant information. Not all of the information there is relevant, this is supposed to be an exhaustive deck. Of course, this is an example, as this depends on the specific topic they decide to test (if you are being hired as an expert, you may have a more “operational” case where you have to explain hwo you would do a transformation / integration).

You are given a question (just like in any other case interview) and then you have 30 mins to go through the information.

After that you present your recommendation, based on a structure with key messages and insights/facts that are based on the information you had. All of that will be probed by the interviewer. They will want to understand why you organized things the way you did and how you are supporting your recommendation, and also why you disregarded some facts. 

Then it becomes just a regular case - they will come up with more questions - some they already had, some other that arise from the discussion. Can't know beforehand how many questions there will be but honestly it is not the most relevant thing. 

So how do you prepare? Just like you would prepare for any other case interview.

On a personal note, given that I used to work for EY-Parthenon, I have been helping several candidates in preparing specifically for these types of interviews.