How does Binace work?

So, could you explain to me in a concise manner, how does Binance actually function as a cryptocurrency exchange platform? I'm particularly interested in understanding the underlying mechanics of how users can buy, sell, and trade various digital assets on the platform. Also, I'd like to know if there are any unique features or services that Binance offers that set it apart from other exchanges in the market. Additionally, how does Binance ensure the security and safety of its users' funds and transactions? I'm looking forward to your insights.