they ask to write a solution for a business assessment/case. However, the way the case is constructed gives you understanding of the mess inside: no data/numbers, ideas that target complitely various metrics and processes. They ask you open questions about how you`d build the process, how you`d do the integration - which might be good questions for an interview discussion, but is a waste of your time when they expect you to write it. During the whole process i had a feeling i was writing a fiction novel.