In cost leadership strategy, an organization sets out to become the low cost producer in its industry. The sources of cost advantage are varied and depend on the structure of the industry. They may include the pursuit of economies of scale, proprietary technology, preferential access to raw materials and other factors. First with Singapore International Airlines(SIA). There’s something unique about Singapore Airlines. Over the past four decades, it has earned a stellar reputation in the fiercely competitive commercial aviation business by providing customers with high-quality service and dominating the business-travel segments.