You are given (publicly available) resources and materials from Criteo and its competitors, and asked to design a sales pitch to an online retailer of your choice. It is important to do in-depth research, be able to respond to objections, and perform under pressure. Take advantage of the time given to prepare, and be prepared with answers to questions you're anticipating. Everyone is helpful and friendly, so there is no need to be nervous, but it is important to know the ins and outs of the materials.