1 Introduction.- 2 The concept of enterprise integration.- 3 The needs of the field of integration.- 4 State-of-the-art on models, architectures and methodologies.- 5 Some important articles about enterprise integration.- 6 A summary of the CIMOSA reference architecture.- 7 The GRAI-GIM reference model, architecture and methodology.- 8 An overview of PERA.- 8.1 A structure for PERA.- 9 Introduction to the evaluation methods used.- 10 Evaluation questionnaires.- 11 Evaluation questionnaires for CIMOSA.- 12 Evaluation questionnaire for GRAI-GIM.- 13 Evaluation questionnaire for PERA.- 14 Analysis of questionnaire results.- 15 Short form evaluation questionnaire.- 16 Techniques to map the architectures directly against one another.- 17 Mappings against a matrix.- 18 General observations in comparing candidate architectures.- 19 Conclusions and summary of findings.- 20 Recommendations for future work.- Appendix A The background of the Task Force.- 1.1 Background IFAC/IFIP Task Force.- 1.2 Some observations made at the earliest workshop meeting.- 1.3 Scope and work program for the Task Force.- 1.4 Suggested products of the Task Force.- 1.5 Immediate work program.- 1.6 Requirements for a Reference Architecture to be used as a set of evaluation criteria.- Appendix B Members of the Task Force.