What is the primary purpose of zkEVM?

Could you please elaborate on the primary purpose of zkEVM? I understand it's related to Ethereum and privacy, but I'm curious to know the specific objectives and goals it aims to achieve. Is it focused on enhancing security, facilitating faster transactions, or ensuring greater anonymity for users? How does it differ from traditional Ethereum smart contract platforms? I'm eager to learn more about the key features and benefits that zkEVM offers.