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<p>Interoperability (IOP) is considered a critical success factor to forge ahead in the online provi-sion of public services. Interoperability frameworks shall give guidance to practitioners what to consider and to do in order to enable seamless interaction with other public authorities and clients. The well known European Interoperability Framework (EIF) and many others are designed as multi-layer models, distinguishing between technical, semantic and organizational IOP. For achieving technical IOP there are acknowledged standards; for semantic IOP recog-nized concepts and methods are available. However, aspects and characteristics of organizational IOP, although considered to be an important success factor for eGovernment projects, are much more heterogeneous and do not provide similar guidance.</p>
This paper suggests that it will be useful to separate this heterogeneous collection of organizational issues into three dimensions. In line with the assignment of standards and protocols to the technical and semantic layer, an additional layer, presently called organizational IOP, should be confined to standards and concepts dealing with the linkage of business processes and be called business process IOP. All other organizational aspects should be conceived as cross-cutting dimensions, as they refer to elements on all layers. Relevant characteristics of more than 70 good practice cases have been collected within a Study of IOP for the European Commission. Based on these indicators, an empirical taxonomy of settings for achieving IOP at present is developed within an ongoing research project. The proposed classification is presented here in order to invite comments by the IOP community and at the same time is recommended for the discussion about the new draft of the EIF 2.0, issued in July 2008[1].
[1] The EIF v2.0 will take the form of an official Commission position with the publication of a Communication from the Commission to the Council and to the Parliament early 2009.