Web Services

Akhil Sahai and Sven Graupner, Hewlett-Packard Laboratories

Wooyoung Kim, University of Illinois, Urbana-Champaign

Introduction

The Genesis of Web Services

Tightly Coupled Distributed Software Architecture

Loosely Coupled Distributed Software Architectures

Client Utility Systems

Jini

TSpaces

Convergence of the Two Trends

Web Services Today

Web Services Description

Web Services Discovery

Web Services Orchestration

Intra-Web Service Modeling and Interaction

Inter-Web Service Modeling and Interaction

Web Services Platforms

Security and Web Services

Single Sign-On and Digital Passports

Web Services Security Standards

The Future of Web Services

Dynamic Web Services Composition and Orchestration

Personalized Web Services

End-to-End Web Service Interactions

Future Web Services Infrastructures

Conclusion

Glossary

Cross References

References

Further Reading

INTRODUCTION

There were two predominant trends in computing over the past decade—(i) a movement from monolithic software to objects and distributed components and (ii) an increasing focus on software for the Internet. Web services (or e-services) are a result of these two trends.

Web services are described as distributed services that are identified by URI's, whose interfaces and binding can be defined, described, and discovered by XML artifacts, and that support direct XML message-based interactions with other software applications via Internet-based protocols. Web services that perform useful tasks would often exhibit ...

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