Tripadvisor is an American travel and restaurant website that provides reviews and recommendations for hotels, restaurants, activities, and attractions worldwide. The company was founded in 2000 by Stephen Kaufer and Langley Steinert, with the goal of helping travelers make informed decisions based on user-generated content. Tripadvisor's global headquarters are located in Needham, Massachusetts, United States.

The company operates additional offices in major cities around the world, such as London, Paris, New Delhi, Tokyo, and Beijing. The main products and services offered by Tripadvisor include its website and mobile app, where users can search for hotels, restaurants, flights, and attractions. The platform provides millions of reviews and ratings written by travelers, as well as photos, maps, and other useful information to help users plan their trips.

On a global scale, Tripadvisor operates in over 48 markets and is available in 28 languages. The company has several noteworthy subsidiaries, including Viator, a platform for booking tours and attractions, and FlipKey, a vacation rental marketplace. In addition, Tripadvisor has formed partnerships with various travel companies and websites, such as Expedia, Booking.

com, and Kayak, to provide a seamless booking experience for its users. In terms of market position, Tripadvisor is one of the largest travel websites in the world. It has a strong presence in the online travel industry and competes with other platforms like Booking Holdings (formerly Priceline Group), Expedia Group, and Google.

Despite facing competition, Tripadvisor continues to attract a large user base and has been successful in maintaining its position as a trusted source for travel information and reviews. As for major events or achievements, in 2011, Tripadvisor acquired the travel website, Where I've Been, to enhance its social travel planning features. In 2014, the company launched its Tripadvisor Instant Booking feature, allowing users to book hotels directly on the platform.

These enhancements have contributed to the company's growth and improved user experience. Currently, Tripadvisor remains a leading platform in the travel industry. The company continues to innovate and expand its offerings, with a focus on personalized recommendations and a seamless booking process.

As of the latest information available, Tripadvisor continues to adapt to the changing travel landscape and has implemented measures to support businesses and travelers during the COVID-19 pandemic