If this sounds like you...
Many large enterprises have disparate systems including legacy mainframe, databases, packaged and homegrown applications that need to be integrated with each other to provide end user solutions. The technology integration becomes more complex after companies go through Mergers and Acquisitions, which are more prevalent in case of Financial and Telecom Industry verticals. Back-end systems such as SAP, PeopleSoft, Siebel, Oracle, IBM CICS, IMS, VSAM and Relational Databases are collectively known as Line-of-Business (LOB) applications.
Then this may interest you...
The line-of-business adapters provide legacy modernization by bridging existing back-end applications with the modern interfaces. Windows Communication Foundation (WCF) provides a unified framework for building distributed applications, including creating adapters to existing applications.
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http://www.microsoft.com/downloads/details.aspx?FamilyId=56278FDE-B708-469C-987E-DED9C6C5E580&displaylang=en