The purpose of this paper is to provide an overview of asset/liability management through immunization theory. Redington's theory of immunization, as well as McCutcheon's theory are explained in detail. The investment options that can be used to immunize a fund are also discussed. For a more detailed explanation of how a particular investment technique may be utilized, it is suggested that the reader reference the cited papers. Also included are the management considerations of asset/liability management and a synopsis of the existing software packages available to assist in the immunization process.