KAYAK is a leading travel search engine that helps users plan and manage their travel experiences. The company operates in the online travel market, providing a platform where users can search for flights, hotels, rental cars, and vacation packages. KAYAK serves a wide range of clients, from individual travelers to families and business professionals, offering a comprehensive suite of travel-related services.

KAYAK's business model is based on aggregating information from hundreds of travel sites, allowing users to compare prices and options in one place. This aggregation includes accommodations like hotels and vacation rentals, flights from various airlines, car rentals, and even activities at travel destinations. By providing a one-stop-shop for travel planning, KAYAK simplifies the process of finding the best deals and making travel arrangements.

The company makes money primarily through advertising and referral fees. When users click on a travel deal or book a service through KAYAK, the company earns a commission from the travel provider. Additionally, KAYAK offers premium services and tools, such as fare alerts and price forecasts, which can enhance the user experience and provide additional revenue streams.

KAYAK operates globally, catering to a diverse market of travelers. The platform is designed to be user-friendly, with features like flexible travel options, which allow users to book now and change plans later, and tools to track flight prices and receive alerts on deals. This flexibility and ease of use make KAYAK a popular choice for travelers looking to save time and money.

In summary, KAYAK is a comprehensive travel search engine that aggregates information from multiple sources to help users find the best travel deals. It serves a broad clientele, operates in the global travel market, and generates revenue through advertising and referral fees.

Keywords: travel search engine, flights, hotels, car rentals, vacation packages, price comparison, travel deals, user-friendly, global market, advertising revenue.