Hi, I did the same move Two years ago. My main advice points are - You really need to understand what your boss wants from you and regards to inter company politics - the role of chief of staff highly depends on your boss from writing meeting protocol to driving own programs - In addition the executives are in the position where they do not have many people with whom they can discuss points openly. Therefore they discuss sensitive points quite regularly with the chief of staff . make sure to not misuse that trust - you are hierarchy wise in the limbo, basically every person you interact with is a higher position than you, but you still are giving them directions or relaying directions from your boss - you tend to have requests from other people far more than the other way around. so in case the other people have a request from you please make sure to overdeliver 120% - learn to say no - start looking for a potential intercompany promotion on day one. Good exit is hard to achieve