In the first few years of the new millennium, Expedia Inc became - and remains - the world's leading online travel company.

Following InterActiveCorp's (IAC) acquisition of a controlling interest in Expedia in 2002, Expedia grew quickly and its synergies with its parent company's other travel holdings became more and more salient as the company acquired other leading travel brands, including online travel sites Hotels.com, and Hotwire; corporate travel management company Egencia; and traveler reviews & opinions site TripAdvisor.

In 2005, IAC spun out its travel businesses under the name Expedia, Inc., and since that time Expedia, Inc. has evolved into what is today the world's largest online travel company, and parent company to a global portfolio of leading consumer brands. In late 2011 Expedia, Inc. spun out TripAdvisor Media Group and retained its successful travel transaction brands.

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