What do people use Uniswap for?

Could you please explain to me what Uniswap is commonly used for? I've heard about it in the context of cryptocurrency trading, but I'm not entirely sure how it works or what its main functions are. Is it primarily for swapping tokens, or does it offer more advanced features as well? I'm also curious about the kind of users who tend to utilize Uniswap, whether they're individuals, institutional investors, or both. Lastly, what are some of the key benefits that Uniswap offers its users? I'm eager to learn more about this platform and its role in the cryptocurrency ecosystem.