Structure Oriented Architecture

In: Computers and Technology

Submitted By purnarao96
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What is SOA (Service Oriented Architecture)

SOA is a loosely coupled component. Because of the loose coupling of Web Services are optimal for reuse.
The benefits of loose coupling include location transparency, protocol independence, and time independence. SOA is a set of rules and specifications SOA is a set of messages

How can you achieve loose coupling in a soa?

One strategy for achieving loose coupling is to use the service interface (the WSDL for a SOAP Web Service) to limit this dependency, hiding the service implementation from the consumer. Loose coupling can be addressed by encapsulating the service functionalities in a manner that limits the impact of changes to the implementation on the service interface. However, at some point you will need to change the interface and manage versioning without impacting service consumers, in addition to managing multiple security constraints, multiple transports, and other considerations.

Orchestration (computing):
Orchestration describes the automated arrangement, coordination, and management of complex computer systems, middleware, and services.

Orchestration versus Choreography
In orchestration, the involved web services are under control of a single endpoint central process (another web service). This process coordinates the execution of different operations on the Web services participating in the process. The invoked Web services neither know and nor need to know that they are involved in a composition process and that they are playing a role in a business process definition. Only the central process (coordinator of the orchestration) is conscious of this aim, thus, the orchestration is centralized through explicit definitions of operations and the invocation order of Web services

Choreography, in contrast, does not depend on a central orchestrator. Each Web service that participates…...

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