I was invited to take an online assessment. This assessment was pretty straight forward with a few questions about reading data or an income statement and then answering questions about this.
At this point, there was a phone call with the recruiter. This was a very cursory interview and was mostly spent talking about the company.
After this, I went on to their Power Day, which is 4 back to back interviews. Two of these were case interviews and two were behavioral interviews. The case interviews were somewhat challenging for me since I had never done any before, but overall the atmosphere was relaxed.