Typically, applications that provide these services must combine existing enterprise information systems (EISs) with new business functions that deliver services to a broad range of users. The services need to be:
In most cases, enterprise services are implemented as multitier applications. The middle tiers integrate existing EISs with the business functions and data of the new service. Maturing web technologies are used to provide first tier users with easy access to business complexities, and eliminate or drastically reduce user administration and training.
The JavaTM 2 Platform, Enterprise Edition (J2EETM) reduces the cost and complexity of developing multitier, enterprise services. J2EE applications can be rapidly deployed and easily enhanced as the enterprise responds to competitive pressures.
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