Introduction
Amazon.com is the largest retailing online company with 35 millions customers and nearly $5 billion in sales. In the beginning, the CEO Jeff Bezos started Amazon.com in 1995 by selling books because of the unique customer experience the Web could offer for book lovers. Bezos believed that only the Internet could offer customers the convenience of browsing a selection of millions of book titles in a single sitting. The design of the business model is such that technological innovation drives the growth of Amazon.com to offer more types of products at significantly lower prices. Among its many technological innovations for customers, Amazon.com offers a personalized shopping experience for each customer, book discovery through
Another function of Amazon S3 system is that it can be used to measure the effectiveness of how well they serve their customers. The system can test the efficiency of service that allows Amazon keep on improving their service to the customers.

Information System
One of the strength that Amazon possess as an online retailer is that they can manage their information systems i.e. data, information, transaction and logistics processes in an effective manner. Amazon believes in creating investments in their information systems in order to create value and increase profitability. More than that, Amazon has built their information systems not just as an impending technological improvement but as a management solution to business challenges that arise from the radical business environment. The main framework of Amazon's information systems is developed based on a Service Oriented Architecture (SOA). The system technology has been driven to enable this continuing growth, to be ultra-scalable while maintaining availability and performance. This system provides the level of isolation that allows company to build many software components rapidly and independently. In terms of data, the system encapsulates the information with the business logic that operates on the data, with the only access available is through a published service interface. They