Nowadays, relationship Marketing, has become a powerful competitive asset to the Companies, specially the ones that deals directly with the client the custom services companies. There is no doubt when companies offer a high quality services, they established a health and trustful relationship with their clients. Through this analysis it became easier to understand and redefine the companies` roles as well the right steps taken during their own process to achieve a better result, trying to fully understand every single activity developed by them. There for many companies are adopting the relationship marketing, so know they are able to understand and improve their own process, helping the relations between clients, as well their own internal relationship, becoming more competitive to the market.