The combination of network resources to increase efficiency defines what concept?

The concept that describes the combination of network resources to increase efficiency is network virtualization. Network virtualization involves creating a virtual version of a physical network, enabling multiple virtual networks to coexist on the same physical infrastructure. This allows organizations to optimize resource usage, improve network management, and enhance scalability by abstracting and pooling network resources.

In network virtualization, resources such as bandwidth, storage, and computing power are effectively pooled and managed, allowing for greater flexibility and efficiency. By creating virtual networks, organizations can allocate resources dynamically, respond to changing demands, and simplify network management processes.

This approach stands in contrast to other concepts such as cloud computing, which refers to delivering computing services over the internet; data segregation, which focuses on separating data for security or management reasons; and system integration, which involves combining various systems and software applications to work together seamlessly. Network virtualization specifically emphasizes the efficiency gained through the optimization and management of network resources, making it the correct choice.