This document defines and provides examples of different types of interest groups, including promotional groups, protective groups, peak associations, and discusses the concepts of pluralism and corporatism as they relate to interest groups. It provides examples of interest groups in Malaysia such as CUEPACS, BAR Council, AWAM, and discusses how they seek to influence policy and benefit their members and broader interests. The key difference between pluralism and corporatism is that pluralism involves autonomous groups competing to influence policy, while corporatism involves cooperative relationships where groups are incorporated into the policy-making process.