How does CoinMarketCap work?

So, let me ask you, how exactly does CoinMarketCap function? I understand it's a popular platform for tracking cryptocurrency prices and market data, but what's the methodology behind its operations? How does it aggregate and present this information in real-time? Are there any specific criteria or algorithms that CoinMarketCap uses to rank cryptocurrencies and ensure accuracy in its data? I'm curious to know more about how this platform works behind the scenes.