What's the difference between network operation and network security?

Operation and maintenance, the main work is to manage and maintain the company's business infrastructure, including servers, parity, databases, various cluster construction, architecture optimization, etc. Of course, some basic network knowledge and security architecture knowledge need to be integrated into the work.

Network security includes network communication security and application security, which mainly designs or strengthens security precautions and schemes according to business requirements or infrastructure.

Network security and operation and maintenance are two different jobs in theory, but they complement each other and are indispensable in practice.