RDF, or Resource Description Framework, is a standard model used to represent information about resources on the web. It allows data to be structured in a way that machines can understand, making it easier to share and connect information across different systems. RDF uses a simple format of subject-predicate-object triples, where each part describes a relationship between resources. For example, in RDF, you might say that the subject Alice has a friend who is Bob. This structure helps create a web of linked data, enabling better data integration and retrieval. RDF is widely used in applications like semantic web technologies and knowledge graphs.