The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method of operating a management service (MnS) in a communication system supporting a plurality of architectures according to an embodiment of the present disclosure includes identifying an architecture supported by a first instance which is running and a list of functions for the architecture, determining whether to use the first instance based on a result of the identification and a requirement for service provision, and terminating the first instance and generating a second instance in case that the MnS determines not to use the first instance.