Architecting Dependable Systems Architectures for Dependability Intrusion Tolerant Architectures: Concepts and Design Improving Dependability of Component Based Systems via Multi versioning Connectors Increasing System Dependability through Architecture Based Self Repair Dependability in the Web Services Architecture A Component Based Real Time Scheduling Architecture Fault Tolerance in Software Architectures A Fault Tolerant Software Architecture for Component Based Systems The Role of Event Description in Architecting Dependable Systems Architectural Mismatch Tolerance Dependability Analysis in Software Architectures Quality Analysis of Dependable Systems: A Developer Oriented Approach Stochastic Dependability Analysis of System Architecture Based on UML Models Specification Level Integration of Simulation and Dependability Analysis Using Architectural Properties to Model and Measure Graceful Degradation Industrial Experience Dependability Experience in Philips. As software systems become more and more ubiquitous the issues of dependability become more and more critical. Given that solutions to these issues must be planned at the beginning of the design process it is appropriate that these issues be addressed at the architectural level. This book is inspired by the ICSE 2002 Workshop on Architecting Dependable Systems; it is devoted to current topics relevant for improving the state of the art for architecting dependability. Some of the 13 peer reviewed papers presented were initially presented at the workshop others were invited in order to achieve competent and complete coverage of all relevant aspects. The papers are organized in topical sections on architectures for dependability fault tolerance in software architectures dependability analysis in software architectures industrial experience.