TheFollowing Architecturethe work concucted in European Research Projects (e.g. <ref>R4eGov, ATHENA, Interop NOE</ref>) on interoperable information systems, in 2010 the Architecure of Interoperable Information Systems (AIOS) representswas published <ref>Ziemann 2010</ref> as a meansreference for the comprehensive descriptionconstruction of loosely coupled, interoperating information systems and for the systematic, model-based enactment of collaborative business processes.<br To this aim, it builds on three orthogonal axes: Enterprise Dimensions, Colloborative Views and Levels of technical Granularity. At the core of the architecture lies the Business Interoperability Interface, which describes the information system boundaries of one organization to its collaboration Partners and connects internal and external information systems./>
At the core of the architecture lies the Business Interoperability Interface, which describes the information system boundaries of one organization to its collaboration Partners and connects internal and external information systems. The architecure builds on three orthogonal axes: Enterprise Dimensions, Colloborative Views and Levels of technical Granularity:
<br />
=== Enterprise dimensions===
To describe business processes comprehensively,essentialthis dimensionsaxis known from enterprise modeling are be covered, e.g.provides distinct views on processes, functions, data, and organizationorganizational elements. In the organization dimension, roles, units and other organization elements relevant for the collaboration are described and related to internal elements. This ensures for example, that the collaboration partners have a common understanding of the interacting roles. In the data dimension, document types used in the collaboration are defined and related to internally used document types. In the function dimension, business functions and services offered in the collaboration are described. In the process dimension, the processes that each organization offers are described as well as how these public processes are related to adjacent processes of partner organizations.
