Information Technology allows an organization to obtain an advantage over old ways of doing business.
Areas that can be improved using Information Systems include Processing Transactions, Decision Support, Knowledge Worker Support, Groupware and Inter-organizational Systems.
Applications and Systems rely heavily on Communications, Networking and Databases.
There are three types of information system: A Transactions Processing System, A Decision - Oriented System and a Communications - Oriented System.
The most popular systems architecture in organizations is the client - server architecture.
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