The European Commission’s ISA programme, led by DERI’s former eGovernment Unit Leader Dr. Vassilios Peristeras, has defined a set of common Core Vocabularies , which will facilitate the provision of cross-border and cross-sector eGovernment services. These Core Vocabularies are simplified, reusable, and extensible data models that capture the fundamental characteristics of an entity in a context-neutral way. The current specification contains three core vocabularies describing business, location and person.