What is a Network Operations Center?
Network Operation Center (NOC) is a centralized place for network management- both internal and external network communications pass through the operations center for authentication and security purposes.
In detail, a Network Operation Center is one or more places from where the company IT team perform continuous monitoring, determining, managing, analyzing, modifying, or blocking the whole process of any network communication, internet, or satellite, or companies' any IT infrastructure through the computer or other technical infrastructure.

Figure 1. What is Network Operation Center?
In a word, a NOC is one or more places from where a network can be monitored and managed through computers or telecommunications. The person working in a NOC is designated as a NOC engineer. NOC is the first line of defense of any network system as a NOC engineer deals with server down, DDoS attack, phishing, other interruption or failure of the network and ensures the integrity of the network security. Large enterprises or companies dealing with telecommunication, network, or internet business typically own a NOC.
What is The Purpose of the Network Operations Center (NOC)?
In the 19th century, AT&T Corporation, which provides internet, voice, and massage service to customers, business people, and government agencies In America, first realized the use of NOC display switches and routing information in real-time from their most crucial toll point. They established the first-ever NOC in 1962, which they modernized in 1977, located in Bedminster, New Jersey.
But nowadays the world changed, such as the NOC. Present NOCs are the center of network monitoring and control or network management of companies. It oversees framework and equipment, wireless system, dashboard, telecommunication, database, etc. NOC also includes monitoring customer support calls, help desk ticketing systems, integration of customer network tools.