The Enterprise Application Integration (EAI) is clear as the method of accommodating enterprise computer applications utilizing computer software resources, typically firms have two type of applications front office and back office applications, to integrate them in such a means that they can commune with each other when needed either by simple data passing or by mutual approach of different applications. EAI is not just about sharing data between applications; it focuses on sharing both business data and business process. When we talk about EAI it means system of systems which incorporating large scale inter dependency problems with manifold heterogeneous distributed systems across a network.
The back office applications are those associated to the business processes or those applications that are crystal clear to customer and only the employees or managers have to covenant with for example Decision Support System (DSS) or an Enterprise Resource Planning (ERP) and the front office applications are those which are visible to customer or which are for customer like Customer Relationship Management (CRM), before integrating these applications we have to be acquainted with about the communication architectures available, it is contemplation that the best approach to EAI is to use an Enterprise service bus (ESB), which connects frequent, independent systems together. Even though other approaches have been explored, including connecting database level, application layer or user interfaces. In ESB each independent application just need a connection to the bus so it can circulate messages and subscribes to receive certain messages from the bus. This approach can be extremely scalable.
Enterprise Application Integration is interrelated to middleware technologies such as message oriented architecture (MOA), data representation Tech. like XML to make the system highly apparent and scalable, when we talk about scalability web services is the only technique because everything is coming to web now including web services like online shopping stores, online banking and even there are some virtual organizations, universities developing which don't have physical subsistence.
Web Services refuse just appeal to the technician; however directly address real business needs of today. The business should care about Web Services, particularly where they directly replicate some meaningful business concept, and especially where they are being exposed external - and hence are a manifestation on the business.
The road to organizational efficiency can often be impeded by measured, dissimilar processes and faulty communications. Enterprise application integration (EAI) offers the idyllic solution to addressing these issues. By involving different applications to simplify and mechanize business procedures, data and business rules can be mutual across the firm.
Time and again, applications for example customer relationship management and supply chain management, among others, are unable to converse with every other, as these are repeatedly developed using different programming languages and data structures. The solitary solution is to employ a completely new IT infrastructure designed to contain integration. This, conversely, is not only expensive, but can also be unruly to the business as well.
EAI offers an enhanced alternative. It characteristically utilizes an enterprise service bus to automate business processes, incorporate diverse business systems, and boost the longevity of legacy applications. This is through possible through the use of adapters that have been developed to communicate with unlike software systems utilized in the firms. The enterprise service bus used must be highly scalable, have the capability to easily adapt to changes in the organization, and offer a wide range of integration-focused tools.
Utilizing enterprise application integration enables you to trounce the workflow challenges that come with application incompatibility by merging various applications in an enterprise. It also presents other advantages, such as the abilities to access information in real-time and maintain data integrity across multiple systems. In addition, you can eradicate the need for time-consuming and error-prone manual processes, and have a superior awareness of new contingency. Known all these, organizational efficiency is veto longer a distant goal with EAI.