In this artice we will discuss on how to configure a VBC for invoke an EAI WF with a minumun amount of scripting. 
   An article by Siebel Expert Daniel Rodriguez 
This post show how to configure a VBC for invoke an EAI WF with a minumun amount of scripting in siebel.
Steps:
a) Create a VBC based on class “CSSFABCVRec”.

Discussion on Integrating siebel with other application has attracted experts from industries. Below published articles has been shared by siebel EAI champions in our website and linkedin group. Hope this will help you.

I have seen developers discussing different ways to integrate third party applications with Siebel. Hope this nicely elaborated article will help you understanding this better.
I have asked industry experts to share their ideas on to this and now publishing responses with you. More ideas are open. Lets discuss this and provide your expert suggestion in comment section.
Responses of industry expert:
Read what Joan Martí Peraire says about intgrating siebel with third party appication.
In order to integrate Siebel with external application, what I can share, from my own experience, is that there are two options that …

Virtual business components (VBCs) are mechanisms in Siebel EAI by which data from an external system can be viewed in Siebel applications without having to replicate that data within the Siebel Database. We will discuss VBC in a series of 4 articles. Here is the first one, which will help you in understanding why we require VBC and what are VBC’s?.

An Application Services Interface (ASI) is a release-independent interface published by Siebel Systems that allows you to integrate Siebel applications with external applications.
ASIs are published in a standard metadata format, such as Extensible Markup Language Document Type Definitions (XML DTD) and Web Services Descriptive Language/XML Schemas (WSDL/XSD) and are built using the ASI Framework.

Siebel EAI provides adapters and connectors to help create integrations between Siebel applications and external applications.

Siebel EAI adapter provides the low-level interface mechanism to allow one application to talk to another.
Siebel EAI connectors provide low-level connectivity to other back-office applications, such as SAP

A Web Service is programmable application logic that is accessible using standard Internet protocols. Web Services combine component-based development and the Internet and can be reused regardless of how the service is implemented. 
Web Services are based on communication protocols that include HTTP, XML, Simple Object Application Protocol (SOAP), and Web Services Description Language (WSDL).  

 
Virtual business components (VBCs) are mechanisms in Siebel EAI by which data from an external system can be viewed in Siebel applications without having to replicate that data within the Siebel Database.
 VBCs are configured in Siebel Tools and use Business Services to access data from an external system. VBCs can use standard transports like MQSeries, HTTP, and MSMQ, along with the XML Gateway Service, to query, insert, and update data.

Introduction to Interface
Organizations need to integrate business processes across a large number of disparate applications in order to drive revenue growth, increase productivity, and gain visibility into business performance.
To integrate Siebel Business Applications into the Universal Application Network, Siebel Systems continues to enhance the integration tool set within Siebel applications—Siebel Enterprise Application Integration (Siebel EAI).
About Siebel EAI 
Siebel EAI provides components for integrating Siebel Business Applications with external applications and technologies within your company and is designed to work with third-party solutions such as those from IBM, TIBCO, WebMethods, and …