- Load balancing is a feature that distributes client requests across servers for optimum utilization of the resources.

- In a real-time scenario, the services are provided to large number of clients from a limited number of servers.

- To reduce the load on servers, the system selects certain servers.

- These servers implements certain criteria to forward incoming requests.

- There are virtual servers that identifies the server using the load balancing criteria.

- When the client connects to the server, the virtual sersver terminates the connection and initiates a new connection with the selected server.

- The load balancing feature manages the traffic from layer 4 (TCP / UDP) to layer 7(FTP,HTTP)