Loose Coupling And SOA Modelling

SOA presents a new modelling for business distributed applications.  It provides a
approach that is able to cross borders and limitations of many applications, systems
and platforms due to its loosely coupled integration solutions for unified workflows.  . 
Because many organizations provide web services as part of their business, and
because different businesses use different applications across different platforms in
their transactions, the problem of integrating their business applications with
applications of other business partners, customers and clients has become a problem. 
This makes SOA implementation in an organization an important step to becoming a
truly worldwide organization

Because the modelling of many business applications follows the linear process of
synchronous communication, there is always a possibility of failure in the workflow. 
SOA modelling assumes that these errors will eventually occur and will make an
appropriate action to handle them.  Service, communication, and transaction
reliability, integrity, and security are all incorporated in the SOA.  This assures the
business and its clients and customers a service that is always available even if there
is a temporary disruption in the workflow process.

With SOA, the integration of web services that reside in different domains is made
more reliable and secure.  The modelling of SOA shows that even though these
applications and programs have their own boundaries of data encapsulation, they are
still able to cross boundaries and communicate, integrate and interoperate with other
applications that use them because of their loose coupling. This loose coupling of
services makes it easier for companies, consumers, clients and business partners to
update their components,

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