The Data Strategy for the Alliance (DaSA) represents a comprehensive framework aimed at accelerating NATO's transition into a data centric organization, leveraging curated quality data for seamless interoperability and integration across all domains of operation. This strategy replaces the legacy NATO Network Enabled Capability (NNEC) Data Strategy and aims to redefine data management within NATO, challenging traditional distinctions between data and information. Aligned with NATO's Digital Transformation Implementation Strategy, the Data Exploitation Framework Strategic Plan, and the Data Centric Security Implementation Plan, the Data Strategy outlines clear objectives, scope, and structure, providing guidance for managing NATO data as a strategic asset and operationalizing its use for joint and multi-domain operations. Key components include a comprehensive definition of data, key data principles and supporting data enablers, and an effective data governance operating model.