The document discusses data repositories and services. It begins by defining what a data repository is, noting that it is a logical and sometimes physical partitioning of data where multiple databases reside. It then outlines some key aspects of data repositories, including technical features like standards, software, and staffing requirements. The document also discusses functions of repositories like content management, archiving, dissemination and system maintenance. It provides examples of institutional repositories and data repositories, highlighting characteristics of each. Finally, it provides a case study on Dryad, an international repository for data and publications in biosciences.