Integration of Siebel with external applications tends to be the most complex and effort intensive work in most Siebel implementations and upgrades. Based on a recent survey of clients we have discovered that clients have spent as much as 30% of the project effort on integration alone. Common issues seen in integrating Siebel with external applications fall in two categories: Either Clients use hard wired point to point interfaces which limit agility, flexibility and scalability while creating a maintenance over head OR Some clients resort to Siebel based Web Services only to discover that they need to write a lot of custom code in order to map Siebel Web Services to external ones. To integrate Siebel Web Services

with external Web Services seamlessly, there is need for a platform that could effortlessly map, route and manage the flow of messages. In order to do this without a lot of custom coding we need a flexible and robust infrastructure.

Lima Siebel ESB is a messaging-based enterprise service bus that simplifies the integration and flexible re-use of business applications within a service-oriented architecture (SOA). Lima ESB eliminates the rigidity and fragility of point-to-point integration with a robust, event-driven architecture that can evolve, scale and extend throughout the enterprise. Customers use Lima ESB to reduce time to market and costs by avoiding significant effort in custom coding that is involved in mapping internal WSDL to External WSDL, transforming messages formats from Siebel Message Schema to External Schema.