Overall, a very nice, structured, and transparent process. Everyone I've met was friendly and respectful, only green flags.
First interview: HR screening call, usual questions about the experience and motivation for the role. The recruiter was friendly and gave a lot of information about the role and the company.
Second interview: case study presentation with the manager and team director, followed by an exercise that tests your understanding of performance metrics. The case study generally reflects the responsibilities of an Account Manager, you are asked to present to your client and give suggestions on campaign improvements (you are given specific conditions and questions to answer in the brief). The interviewers provided feedback on my work directly, which I valued. The exercise on metrics was short (~15 min) and interesting. In the end, I had time to ask questions about the role.
Third interview: call with the executive committee to better see the motivation and understanding of the role. You have an opportunity to ask your questions from the senior leadership.
The process took some time, so I actually canceled the last stage as I got an offer somewhere else. But they were very upfront and transparent about the time it took to interview different candidates, I appreciated the proactivity.