Network Load Balancing (NLB) is a technology that allows multiple servers to be clustered together to provide high availability and scalability for network services. NLB distributes incoming traffic among multiple servers, increasing the overall performance and reliability of the network.
For example, if a website receives a large number of visitors, NLB can be used to distribute the load among multiple web servers. This helps to ensure that the website remains available and responsive, even during peak traffic. NLB can also be used to provide redundancy, allowing for failover if one of the servers fails.