This document discusses the evolution of knowledge management (KM) from KM 1.0 to KM 3.0. KM 1.0 focused on collecting knowledge, KM 2.0 focused on sharing knowledge using social media tools, and KM 3.0 focuses on using existing knowledge to help employees do their jobs. The key difference between KM 2.0 and 3.0 is that 3.0 recognizes the need to filter out irrelevant information. Effective KM requires a cultural shift towards openly sharing knowledge and making KM part of employees' regular work.