729 Copyright © 2009, IGI Global, distributing in print or electronic forms without written permission of IGI Global is prohibited. Chapter 2.28 A Framework for Information Systems Integration in Mobile Working Environments Javier García-Guzmán Universidad Carlos III de Madrid, Spain María-Isabel Sánchez-Segura Universidad Carlos III de Madrid, Spain Antonio de Amescua-Seco Universidad Carlos III de Madrid, Spain Mariano Navarro TRAGSA Group Information, Spain AbstrAct This chapter introduces a framework for design- ing, distributing, and managing mobile applica- tions that uses and updates information coming from different data sources (databases and systems from different organizations) for helping mobile workers to perform their job. A summary of the state of the art in relation to mobile applications integration is presented. Then, the authors describe the appropriate organizational context for apply- ing the integration framework proposed. Next, the framework components and how the framework is use are explained. Finally, the trials performed for testing the mobile applications architecture are discussed, presenting the main conclusions and future work. Furthermore, the authors hope that understanding the concepts related to the integration of mobile applications through the presentation of an integration framework will not only inform researchers of a better design for mobile application architectures, but also assist in the understanding of intricate relationships between the types of functionality required by this kind of systems.