Keynotes -- To Make Modeling a Natural Tool in Business Development We Need to Stop Talking about Modeling -- Enterprise Modeling – What We Have Learned, and What We Have Not -- Experiences in Enterprise Modeling -- Information Demand Context Modelling for Improved Information Flow: Experiences and Practices -- The Common Model of an Enterprise’s Value Objects, Presented in Relevant Business Views -- On the Use of i* for Architecting Hybrid Systems: A Method and an Evaluation Report -- The Process of Modeling -- Interactions, Goals and Rules in a Collaborative Modelling Session -- Evaluating Modeling Sessions Using the Analytic Hierarchy Process -- A Goal–Oriented Approach for Business Process Improvement Using Process Warehouse Data -- Enterprise Modeling in Information Systems Development -- From i* Requirements Models to Conceptual Models of a Model Driven Development Process -- A Combined Framework for Development of Business Process Support Systems -- Towards Better Fitting Data Warehouse Systems -- Model Quality and Reuse -- Evaluating Goal Achievement in Enterprise Modeling – An Interactive Procedure and Experiences -- The Impact of Secondary Notation on Process Model Understanding -- Towards Cross Language Process Model Reuse – A Language Independent Representation of Process Models -- Enterprise Modeling for Service Modeling -- Service–Driven Information Systems Evolution: Handling Integrity Constraints Consistency -- Socio-instrumental Service Modelling: An Inquiry on e-Services for Tax Declarations -- New Ventures in Enterprise Modeling -- A Game Prototype for Basic Process Model Elicitation -- Enterprise Models as Data -- The IT-Socket: Model-Based Realisation of the Business and IT Alignment Framework.

This volume constitutes the proceedings of the Second IFIP WG 8.1 Working Conference on the Practice of Enterprise Modeling, which took place in Stockholm, Sweden, during November 18-19, 2009. The conference series constitutes a dedicated forum where practice of Enterprise Modeling (EM) is addressed by bringing together researchers, users, and practitioners in order to develop a better understanding of the subject, and to improve the practice of EM, as well as to share knowledge and experience. The 17 papers presented were carefully reviewed and selected from 41 submissions. The topics covered are experiences in EM, the process of modeling, EM in information systems development, model quality and reuse, enterprise modeling for service modeling, and new ventures in enterprise modeling.