Keynotes.- Software Architectures for Task-Oriented Computing.- An Active Architecture Approach to Dynamic Systems Co-evolution.- What's in a Service?.- Full Research Papers.- Pattern-Based Evolution of Software Architectures.- Formal Design of Structural and Dynamic Features of Publish/Subscribe Architectural Styles.- An Ontology-Based Approach for Modelling Architectural Styles.- FIESTA: A Generic Framework for Integrating New Functionalities into Software Architectures.- Beyond ATAM: Architecture Analysis in the Development of Large Scale Software Systems.- Emerging Research Papers.- Enabling Adaptivity in User Interfaces.- Architecture Migration Driven by Code Categorization.- Effective Tool Support for Architectural Knowledge Sharing.- A Goal-Oriented Approach for the Generation and Evaluation of Alternative Architectures.- Hierarchical Verification in Maude of LfP Software Architectures.- First Class Connectors for Prototyping Service Oriented Architectures.- Wireless Sensor Network Application Development: An Architecture-Centric MDE Approach.- A Distributed Staged Architecture for Multimodal Applications.- On the Modularity of Software Architectures: A Concern-Driven Measurement Framework.- Experience Papers.- Lightweight Web Services for High Performace Computing.- Research Challenge Papers.- The Art and Science of Software Architecture.- Issues in Applying Empirical Software Engineering to Software Architecture.- Leveraging Architecture Patterns to Satisfy Quality Attributes.- Poster Papers.- Architecture for Developing Adaptive and Adaptable Collaborative Applications.- Analyzing Styles of the Modular Software Architecture View.- Dynamic Reconfiguration of Software Architectures Through Aspects.- Model-Driven Approach for Designing Industrial ControlSystems.- Informed Evolution.- Using Connectors to Model Crosscutting Influences in Software Architectures.- From Mobile Business Processes to Mobile Information Systems.- An Architectural Model for Small-Scale Component-Oriented Frameworks.- UML Profile for the Platform Independent Modelling of Service-Oriented Architectures.- Managing Separation of Concerns in Grid Applications Through Architectural Model Transformations.- Aqueducts: A Layered Pipeline-Based Architecture for XML Processing.- On the Interplay of Crosscutting and MAS-Specific Styles.- Processes for Creating and Exploiting Architectural Design Decisions with Tool Support.- Supporting the Automatic Generation of Proto-Architectures.- AspectLEDA: Extending an ADL with Aspectual Concepts.- Experiences Using a Component-Oriented Architectural Framework for Robots and Its Improvement with a MDE Approach.

Software architecture has emerged as an important subdiscipline of software engineering encompassing a broad set of languages, styles, models, tools, and processes. The role of software architecture in the engineering of software-intensive applications has become more and more important and widespread. Indeed, component-based and service-oriented architectures have become key to the design, development, and evolution of most software systems. The European Conference on Software Architecture (ECSA) is the premier European conference dedicated to the field of software architecture, covering all architectural features of software and service engineering. It is the follow-up of a successful series of European workshops on software architecture held in the United Kingdom in 2004 (Springer LNCS 3047), Italy in 2005 (Springer LNCS 3527), and France in 2006 (Springer LNCS 4344). Due to its success, it has evolved into a fu- fledged series of European conferences whose first edition was ECSA 2007, held in Madrid, Spain September 24-26, 2007. ECSA 2007 provided an international forum for researchers and practitioners from academia and industry to present innovative research and to discuss a wide range of topics in the area of software architecture. It focused on formalisms, technologies, and processes for describing, verifying, validating, transforming, building, and evolving software systems, in particular founded on component-based and service-oriented architectures. Covered topics included architecture modeling, architectural aspects, architecture analysis, transformation and synthesis, quality attributes, model-driven engineering, and architecture-based support for developing, adapting, reconfiguring, and evolving component-based and service-oriented systems.