About the Authors

Olaf Zimmermann Olaf Zimmermann is a professor and institute partner at the Institute for Software at the University of Applied Sciences in Rapperswil, Switzerland. His areas of interest include Web-based application and integration architectures, SOA and cloud design, and architectural knowledge management. Previously, Olaf was a senior principal scientist at ABB Corporate Research and a research staff member and executive IT architect at IBM Research who investigated the role of architectural decisions in the design process. Prior to that, Olaf worked as a solution architect and consultant, helping international clients in multiple industries build enterprise-scale SOA/Web services and Java Enterprise Edition solutions on professional services projects. Olaf is a certified Open Group Distinguished (Chief/Lead) IT Architect and a member of the Advisory Board of IEEE Software. He is an author of Perspectives on Web Services (Springer, 2003) and contributed to IBM Redbooks including the first one on Eclipse and Web services (2001). Olaf received a PhD in computer science from the University of Stuttgart in 2009 and a "Diplom-Informatiker" (=MS) degree in Computer Science from the Technical University in Braunschweig (1993).

Mark Tomlinson is an IBM Consulting IT Specialist and is based in London, UK. Since joining the company in 1995, he has worked for the IBM Insurance Business, IBM Global Services, IBM Global Network and has finally found his home in the IBM Software Group. Mark has been working with various Java and XML technologies for the past years, including WebSphere since its very first release. He is the champion for IBM's application development software in Northern Europe and a founder member of the region's Web services evangelism team. Mark is an author of the IBM ITSO Redbook Web Services Wizardry with WebSphere Studio Application Developer and holds a degree in Physics from the University of Warwick, UK.

Stefan Peuser, based in Herrenberg, Germany, is a Consulting IT Architect for IBM Global Business Services. Having joined IBM in 1992, his areas of expertise include methodical approaches for building IT solutions, Java 2 Enterprise Edition (J2EE), Web services and Enterprise Application Development (EAD). Stefan is a member of the IBM Technical Expert Council (TEC) for the EMEA central region. He holds a degree in Computer Science from the Technical University of Stuttgart, Germany. Over the last few years, Stefan has been the lead architect in a number of e-business development projects and participated in consulting engagements mainly in the finance and telecommunications industries. He also has a background as instructor of several formal, world-wide IBM training classes on middleware technology and tools.