What is a centralized cryptocurrency exchange (Cex)?
In the realm of cryptocurrency and finance, could you elaborate on what a centralized cryptocurrency exchange (Cex) is? I understand that it plays a pivotal role in the trading of digital assets, but I'm curious about its specific operational structure and how it differs from decentralized exchanges. Could you explain how Cexs facilitate transactions, their role in custody of assets, and the potential risks and benefits they offer to investors? I'm particularly interested in the regulatory oversight surrounding these exchanges and their compliance measures.