Use the Internet to research the SABRE system produced by American Airlines. This system demonstrates how BIS can be used to gain strategic advantage. Provide an analysis of this system. Your response should include discussion of the following areas:

(a) Describe how the overall approach adopted by American Airlines incorporated the basic competitive strategies of cost leadership, innovation and product differentiation.

(b) In what ways did SABRE provide American Airlines with a competitive advantage? Your analysis should refer to concepts related to the strategic use of information systems, for example entry barriers.

(c) Although SABRE was undoubtedly successful, American Airlines was not able to maintain its competitive advantage beyond the late 1980s. What factors played a part in the erosion of the company’s lead over its competitors and how did the company react?