It is mostly just a time management issue: you still need to display the same qualities as in a traditional case interview, but now also have to add 2 more things: (1) parse through a huge amount of data - most of which may not be relevant or useful, and (2) you need to prepare your presentation itself

I recommend you give yourself a very strict timeline. For example, assuming 1h to prep: 5 minutes to read the question and prepare the framework, 10 minutes to scan the data; 20 min to prepare the argumentation, 15 minutes to create the slides; 5 minutes for the wrap-up; whatever is left to review and get ready to give a verbal presentation

Hello!

Written case interviews are indeed becoming very fashionable nowadays as a way to interview!

In this case in particular, and given that you only have 1h, I would focus on 4 slides, 5 tops. More would probably make them be less well.

Remember that the skillset tested is the same than in the "usual" cases, hence, all the practice you may have done totally plays in your favor.

One important point to add is the need to be very 80-20, structured and to the point, since the prep time is very short, so we need discipline with the analysis to have enaugh time to prep the communication strategy.

There are many many entries in thsi same Q&A regarding written cases, hence, I would recommend you to look with the keywords "written case"

Hope it helps!

Cheers,

Clara