In general, we define services as deeds, processes or performances. The services availed or given are not tangible things which can be touched, seen felt, but rather are intangible deeds and performances. The better servicesare the strategic asset of any organization; this talent f serving the customer has to be managed and preserved. This project presents a descriptive study, which mainly investigates on the effectiveness of 7 P’s in service marketing and service marketing as well. A case study of SUBWAY, a leading fast food restaurant, has been presented in this research and analysis of the effectiveness of their service part and betterment in the service marketing of the business.