There’s something 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. SIA has won the World’s Best Airline award from Condé Nast Traveler 21 out of the 22 times it has been awarded and Skytrax’s Airline of the Year award three times over the past decade.

A version of this article appeared in the July–August 2010 issue of Harvard Business Review.