| Business process optimization is a need to adapt to enterprise development and a management thought adapt to changing market. Through radical change of existing work flow and reconstruction of organizational architecture, the operating efficiency of an enterprise will be improved in many aspects, so as to realize innovative and revolutionary development in management. With the development of the internet industry, popularity of smart terminals, development of all kinds of mobile phone wireless applications, the era of big data has arrived. In order to stand out in increasingly fierce market competitions, customer-oriented sales process design is imperative within internet service enterprises. Business process optimization will help enterprise consolidate its current market status, cultivate customer loyalty and improve customer satisfaction so as to get a leg up on competitions. Taking the sales process of Y Company as the research object, the author introduces the idea of process reengineering and the relevant theories of process optimization, uses case study method to research and analyze the current sales process status of Y Company, puts forward optimized solution to sales process by ESIA analytical approach, and provides the corresponding supporting measures. Based on this study, Y Company may enhance the overall operation efficiency of its sales team and increase staff income and retention ratio. Also, this paper provides a reference for sales process design of Internet service enterprises. |