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As newer software engineering technologies, such as Service-Oriented Architecture (SOA), become the basis for mission-critical systems, they must include security as a foundational capability. This paper highlights security concepts relevant to using SOA as a foundation for a Common Operating Environment (COE), i.e., a set of infrastructure and common services for developing and executing applications across multiple platforms. The authors present and motivate security needs, tradeoffs, and solutions in the various layers of a SOA-based COE, including: the network, computational platforms, and the common software infrastructure consisting of a SOA stack, common services, and applications.
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