Most commonly, the term load balancing refers to distributing incoming HTTP requests across Web servers in a server farm, to avoid overloading any one server. Because load balancing distributes the requests based on the actual load at each server, it is excellent for ensuring availability and defending against denial of service attacks.
The F5 BIG-IP® Local Traffic Manager performs load balancing across servers in a single data center.
The F5 BIG-IP® DNS uses topology-based load balancing to inspect a user's IP and determine the most efficient data center.
The term load balancing can also refer to file servers, when file protocol requests are distributed across file servers to overcome the capacity, bandwidth, or CPU limitations of any single system.
To learn more on load balancing, visit DevCentral.