Open Archives = enable access to Web-accessible material through interoperable repositories for metadata sharing, publishing and archiving
"The essence of the open archives approach is to enable access to Web-accessible material through interoperable repositories for metadata sharing, publishing and archiving. It arose out of the e-print community, where a growing need for a low-barrier interoperability solution to access across fairly heterogeneous repositories lead to the establishment of the Open Archives Initiative (OAI). The OAI develops and promotes a low-barrier interoperability framework and associated standards, originally to enhance access to e-print archives, but now taking into account access to other digital materials. As it says in the OAI mission statement "The Open Archives Initiative develops and promotes interoperability standards that aim to facilitate the efficient dissemination of content."