The document introduces the Semantic Web, which extends the current web by encoding additional metadata and meaning about web resources using formal knowledge representation languages. This allows machines to better understand and process web information, enabling computers and people to cooperate more effectively. Key aspects of the Semantic Web include uniquely identified resources connected by hyperlinks, metadata encoded using ontologies, and linked open data which makes data integration easier by publishing concepts, entities, and properties on the web. Examples are given of applications such as knowledge graphs, content publishing and integration, and social graphs.