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Service-orientation is a design paradigm for computer software in the form of services. The principles of service-oriented design stress the separation of concerns in the software. Applying service-orientation results in units of software partitioned into discrete, autonomous, and network-accessible units, each designed to solve an individual ...
The service-orientation design principles help in distinguishing a service-oriented solution [14] from a traditional object-oriented solution by promoting distinct design characteristics. The presence of these characteristics in a service-oriented solution greatly improves the chances of realizing the aforementioned goals and benefits.
Service-oriented architecture aims to allow users to combine large chunks of functionality to form applications which are built purely from existing services and combining them in an ad hoc manner. A service presents a simple interface to the requester that abstracts away the underlying complexity acting as a black box.
Erl is known for defining eight principles of service design for service-orientation. These principles were first published in 2005 in his book Service-Oriented Architecture: Concepts, Technology, and Design [13] and in the 2005 edition of SOA World Magazine, [14] and then became the basis for his book SOA Principles of Service Design, [15] published in 2007.
Service-oriented Software Engineering (SOSE), also referred to as service engineering, [1] is a software engineering methodology focused on the development of software systems by composition of reusable services (service-orientation) often provided by other service providers.
In a service composition, a service may need to store activity-specific data in memory while it is waiting for another service to complete its processing. Consequently, in case of service-orientation, an efficient management of service activity related data becomes more important as service-orientation puts a lot of emphasis on service reuse.
A service interface in SOP is an in-memory object that describes a well-defined software task with well-defined input and output data structures. Service interfaces can be grouped into packages. An SOP service interface can be externalized as a WSDL operation and a single service or a package of services can be described using WSDL. Furthermore ...
Service orientation provides significant advantages for IT infrastructure services. The main benefits include increased utilisation of individual resources (meaning lower total cost of ownership) and increased service-levels as applications do not depend on the availability of any individual resource, but may use any one resource available in the pool.