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The '''Open Grid Services Architecture''' ('''OGSA''') describes an architecture for a [[Service-oriented architecture|service-oriented]] [[grid computing]] environment for business and scientific use, developed within the [[Global Grid Forum|Global Grid Forum (GGF)]]. OGSA is based on several other [[Web service]] technologies, notably [[Web Services Description Language|WSDL]] and [[Simple Object Access Protocol|SOAP]], but it aims to be largely agnostic in relation to the transport-level handling of data.
Briefly, OGSA is a distributed interaction and computing architecture based around services, assuring interoperability on heterogeneous systems so that different types of resources can communicate and share information. OGSA has been described as a refinement of the emergeing Web Services architecture, specifically designed to support Grid requirements. <ref>[http://www.extreme.indiana.edu/~gannon/OGSAanalysis3.pdf An Analysis of The Open Grid Services Architecture]</ref> OGSA has been adopted as a grid architecture by a number of grid projects including the [[Globus Alliance]]. Conceptually, OGSA was first suggested in a seminal paper by [[Ian Foster]] called "The Physiology of the Grid", and later developed by [[Global Grid Forum | GGF]] working groups which resulted in a GGF information document, entitled ''The Open Grid Services Architecture, Version 1.0''. <ref>[http://www.gridforum.org/documents/GWD-I-E/GFD-I.030.pdf The Open Grid Services Architecture, Version 1.0]</ref> The [[Global Grid Forum]] continues to track Tier 1 use case scenarios used in the definition of the OGSA core services. <ref>[http://www.gridforum.org/documents/GWD-I-E/GFD-I.029v2.pdf OGSA Tier 1 Use Case Draft Document]</ref>
==Features==
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