Knowledge management is important for organizations today for three main reasons: globalization, leaner organizations with increased workloads, and corporate amnesia due to increased workforce mobility. Effective knowledge management involves capturing knowledge (tacit and explicit), sharing knowledge through communities of practice, and embedding knowledge management systems into organizational processes. Key technologies that support knowledge management include intranets, groupware, document management systems, and knowledge bases. Case studies of knowledge management in Indian companies like NTPC, PowerGrid, and IT industries demonstrate how capturing tacit knowledge, collaborating, disseminating best practices, and driving innovation can provide benefits at the individual, community, and organizational levels.