Skip to main content
Home Network operations center (NOC)

Network operations center (NOC)

Network operations center definition

A network operations center (NOC, pronounced “knock”) is a central hub where IT experts oversee and manage networks for optimal performance and security. A NOC is like a control room for a network that helps ensure seamless, efficient, and secure operations.

See also: network administrator, NetSecOps, security operations center, security event management, data center design

History of a network operations center

NOCs have their roots in the early days of telecommunication networks. Telecom companies used them to keep tabs on the performance and reliability of their vast networks. As technology grew, so did the role of NOCs. Over time, their functionalities evolved into overseeing various IT systems for different sectors.

Functions of a network operations center

  • Monitoring network traffic. NOCs keep an eye on the health and performance of networks, identifying slow or failing components and ensuring smooth data flows.
  • Ensuring network security. They detect signs of cyber threats, such as hacking attempts or malware infections, and take steps to protect the network.
  • Maintenance and upgrades. NOC teams perform scheduled maintenance, software updates, and equipment upgrades.
  • Responding to incidents. In case of issues like outages or security breaches, NOC teams respond to mitigate the problem and restore normal operations. They also keep other teams, stakeholders, and sometimes even customers informed about what’s happening and what to expect.
  • Backup and redundancy. They keep backup plans and systems in place for quick recovery from network failures.

Use cases of network operations centers

  • Internet service providers (ISPs). NCOs help ISPs ensure continuous internet services for their customers.
  • Data centers. Large data centers use NOCs to monitor server health, manage network traffic, and ensure data integrity.
  • Large corporations. Big businesses have their own NOCs to keep their internal networks, systems, and applications running smoothly.
  • Financial institutions. Banks and stock exchanges use NOCs to ensure uninterrupted transactions and other services for their clients.
  • Government and defense. Government agencies and military entities have NOCs to manage their secure communication networks and IT systems.
  • Utilities and energy. Utility companies use NOCs to watch over their grids, manage outages, and coordinate responses to incidents.