Resumo: Este artigo apresenta uma arquitetura para a construcao de laboratorios de acesso remoto (ou Web Labs) segundo o paradigma de computacao orientada a servico. Nesta arquitetura, os blocos elementares sao servicos que, recursivamente, podem ser combinados na construcao de servicos mais complexos. Cada recurso do laboratorio (fisico ou logico) e modelado e implementado como um Servico Web e experimentos oferecidos pelo Web Lab sao construidos por meio da composicao destes servicos. Um Web Lab construido segundo a arquitetura proposta e apresentado, juntamente com exemplos de experimentos remotos na area de redes de servicos diferenciados. Abstract: This paper presents an architecture for building remote access laboratories (or Web Labs) following the service-oriented computing approach. In this architecture the application's building blocks are services that can be recursively composed resulting in more comprehensive services. Remote access laboratories can benefit of this approach. Every lab resource (physical or logical) is modeled and implemented as a Web Service and lab experiments are assembled by composing these services. A Web Lab built following the proposed architecture is presented with examples of remote experiments in the fields of differentiated services networks.
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