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Thomas Erl

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For a complete list of the co-authors and contributors, see the end of the article. The following section demonstrates the creation of a simple "Hello World" service in a Windows Azure hosted application. Note: If you are carrying out the upcoming steps with Visual Studio 2008, you will need to be in an elevated mode (such as Administrator). A convenient way of determining whether the mode setting is correct is to press the F5 key in order to enter debug mode. If you receive an error stating "the development fabric must be run elevated," then you will need to restart Visual Studio as an administrator. Also, ensure the following on your SQL Express setup: SQL Server Express Edition 2008 must be running under the ‘.\SQLEXPRESS' instance Your Windows account must have a login in .\SQLEXPRESS Your login account is a member of the sysadmin role If SQL Express isn't confi... (more)

Exclusive SOA Web Services Journal Briefing – Thomas Erl On SOA

With the unwavering prominence of service-oriented architecture (SOA) there is an increasing interest in understanding what exactly it means for something to be considered "service-oriented." Thomas Erl recently completed a lengthy research project for SOA Systems Inc. into the origins of SOA and the current state of service-orientation among all primary SOA technology platforms. This body of work contributed to the mainstream SOA methodology developed by SOA Systems and was also documented in Thomas's new book, Service-Oriented Architecture: Concepts, Technology, and Design. We ... (more)

Introducing SOA Design Patterns

Originally inspired by techniques used to design buildings and cities, and popularized by the Gang of Four during the mainstream emergence of object-orientation, design patterns have seen us through the various shifts in architecture, technology, and, of course, design. Pattern catalogs have periodically emerged, one building on the other, and each revealing a set of problem-solving techniques and providing invaluable insights as to how and when those techniques should be used to help us attain our design goals. SOA has its own history, having risen out of a haze of ambiguity to e... (more)

Cloud Computing, SOA and Windows Azure

For a complete list of the co-authors and contributors, see the end of the article. Microsoft's Software-plus-Services strategy represents a view of the world where the growing feature-set of devices and the increasing ubiquity of the Web are combined to deliver more compelling solutions. Software-plus-Services represents an evolutionary step that is based on existing best practices in IT and extends the application potential of core service-orientation design principles. Microsoft's efforts to embrace the Software-plus-Services vision are framed by three core goals: User expe... (more)

Cloud Computing, SOA and Windows Azure - Part 2

For a complete list of the co-authors and contributors, see the end of the article. Windows Azure Platform Overview The Windows Azure platform is an Internet-scale cloud computing services platform hosted in Microsoft data centers. Windows tools provide functionality to build solutions that include a cloud services operating system and a set of developer services. The key parts of the Windows Azure platform are: Windows Azure (application container) Microsoft SQL Azure Windows Azure platform AppFabric The infrastructure and service architectures that underlie many of these nati... (more)