Service orientation is an approach to software systems development that has become a popular way to implement distributed, loosely coupled systems, because it offers such features as standardization, platform independence, well-defined interfaces, and tool support that enables legacy system integration. From a quality attribute point of view, the primary drivers for service orientation adoption are interoperability and modifiability. However, a common misconception is that an architecture that uses a service-oriented approach can achieve these qualities by simply putting together a set of vendor products that provide an infrastructure and then using this infrastructure to expose a set of reusable services to build systems. In reality, there are many architectural decisions that need to be made. An architectural decision that promotes interoperability or modifiability can negatively impact other qualities, such as availability, reliability, security and performance. This presentation will talk about the effect that service orientation has on system quality attributes.
About the Speaker
Grace Lewis is a senior member of the SEI technical staff within the Systems of Systems Practice (SoSP) Initiative in the Research, Technology, and Systems Solutions (RTSS) Program. Her current interests and projects are in service-oriented architecture (SOA), cloud computing, context-aware applications, and technologies for systems interoperability. Her latest publications include multiple reports and articles on these subjects and a book in the SEI Software Engineering Series to be published later in 2011. She is also a member of the technical faculty for the Master in Software Engineering Program at Carnegie Mellon University (CMU). Lewis holds a bachelor's degree in systems engineering and an Executive MBA from Icesi University in Cali, Colombia; and a master's degree in software engineering from CMU.