Firstly there is a CV check, then a short interview on motivation and case solving skills. Finally, a long interview with senior people on motivation and a case solving skills again.
I applied online. The process took 4 weeks. I interviewed at Mastercard (Londres, Inglaterra)
Interview
Very kind, somewhat challenging but the case studies aren't difficult, very logical. Initial stages are easy, if they like your resume they'll advance you. The final interviews can be challenging, especially the behavioural one (you will need a lot of examples of challenging consulting scenarios)
Interview questions [1]
Question 1
Tell me about a time you had to adapt your presentation to a client based on unexpected news.