Couchsurfing is a global community that connects travelers with locals who offer free accommodation in their homes. It allows people to experience new cultures and meet new friends while saving money on lodging. Hosts can provide a couch, a spare room, or even just a place to sleep, creating a unique travel experience. The platform operates through a website and mobile app, where users create profiles, share travel plans, and request stays. Members can leave reviews and ratings, helping to build trust within the community. Couchsurfing promotes cultural exchange and fosters connections between people from different backgrounds.