The last decade has seen a growing interest in the Semantic Web, which extends the web of documents to a web of data. This technology applies web-based standards for encoding datasets and linking them to other published datasets, so that applications can exploit data from many different sources. It also provides standards for encoding general knowledge in ontologies, so allowing enhancements based on automatic reasoning (improved querying, for example).

This chapter introduces Linked Data and related semantic technologies, and shows how they can be deployed in web applications.