Data Lifecycle Management (DLM) is a policy-based approach to managing the flow of an organization's data throughout its lifecycle - from creation and initial storage, through active use, to archival and eventual deletion. DLM ensures that data is stored securely, remains accessible when needed, and is disposed of properly to comply with legal, regulatory, and business requirements. Effective DLM helps reduce storage costs, mitigates security risks, and supports data privacy by ensuring that outdated or unnecessary data is systematically removed. It is a critical aspect of cybersecurity and data governance strategies.