What IP address does a load balancer provide for external connections to connect to web servers in a load-balanced group?

Load balancers provide a virtual IP, or VIP. Traffic sent to the VIP is directed to servers in the pool based on the load-balancing scheme that that pool is using—often a round-robin scheme, but other versions that include priority order and capacity tracking or ratings are also common. The load balancer's IP address is normally used to administer the system, and individual IP addresses for the clustered hosts are shielded by the load balancer to prevent traffic from consistently going to those hosts, thus creating a failure or load point.