A knowledge graph is a structured representation of information where entities (people, places, concepts, etc.) are connected by relationships, creating a network of linked data. Unlike a simple database, a knowledge graph captures the context and interconnections between facts, enabling AI to reason about relationships and dependencies. In enterprise contexts, knowledge graphs are used for advanced search, recommendation systems, and contextual decision-making. They are particularly valuable when integrated with AI to deliver richer, more accurate, and explainable results.