A communication method, apparatus, and system, to implement service data transmission in a server localization scenario, where the method includes: A first network element determining a first address used by a user equipment to send a data packet of a first service to a user plane function network element; and the first network element sending, to the user plane function network element, a correspondence between the first address and address information of a first server that provides the first service, where an address indicated by the address information is used by the user plane function network element to send the data packet to the first server.