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The Service-Oriented Architecture (SOA) and its most common implementation, web services, represent a new evolution in application architecture for the enterprise. Organizations can significantly increase their agility in the face of change, improve their operating efficiency, and greatly reduce the cost of doing business. However, many organizations with significant investments in data collection and storage technologies are still struggling with how best to embrace and deploy the new architecture. One reason is the vast amount of data in existing data stores - organizations can't afford to reengineer or replicate all of them. Another concern is balancing the need for information sharing with the need to protect and secure critical information systems.
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