One embodiment of the present disclosure is a system. The system includes one or more memory devices having instructions stored thereon that, when executed by one or more processors, cause the one or more processors to perform operations. The operations include: obtaining first data indicating operating parameters of a server of a building management system (BMS), obtaining second data regarding indicating operating parameters of at least one of a supervisory controller or a field controller of the BMS, obtaining third data regarding indicating operating parameters of one or more edge building devices, and calculating a performance index value for the BMS based on an aggregate of the first data, the second data, and the third data.