This document provides an overview of competency modeling and its components. It discusses how competency models can be used for employee selection, development, and performance evaluation. The key components of a competency model are behavioral indicators, competencies, and competency clusters. Behavioral indicators are examples of observable behaviors, competencies are sets of behaviors needed to perform a job, and competency clusters group related competencies. The document also describes how a competency library and modeling software can be used to build customized competency models for different job roles.