At its most basic, EAI shares data between applications. EAI can have several purposes. It can link databases, sharing data and providing a backup database in case problems arise. EAI can also provide data warehousing, funneling data from several databases into one for optimal use. Businesses also use EAI to complete a single business transaction across multiple systems.
The most innovative use of EAI is to create a common virtual system. In other words, EAI can meld a series of applications and/or databases into one cohesive operating machine. This is without a doubt a more powerful option than one server operating on its own.
Why would companies want to do this? Among the reasons are to take advantage of new technology, such as Internet and intranet functions. Related to these are e-commerce and electronic communication, such as email and videoconferencing. The vast majority of EAI users are large businesses that have large data sharing requirements.
One well-known use of EAI is by credit card companies and other watchdog entities whose goal it is to catch credit card thieves. EAI allows these businesses to efficiently track millions of bits of data and to mine that data for a specific purpose. Another popular use of EAI is by financial institutions that want to help their customers complete foreign currency transactions online.
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