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Top Stories by Thomas Erl

BEA recently announced that it is broadening its SOA consulting practice, and that it has created a tool companies can use to learn about SOA and figure out how prepared they are to transition to the new architectural model. While BEA and other major vendors, such as IBM and Microsoft, continue to deepen their investments in SOA, many of us are still struggling to understand what SOA actually is. How well do you know SOA? If you were asked to write a definition right now, what would it be? One of the challenges has always been to distinguish SOA from a standard distributed architecture that use Web Services. Another has been to pinpoint exactly what the well-publicized service-orientation paradigm includes. To help with these questions, we asked noted SOA expert Thomas Erl to provide some clarity. Thomas wrote "Service-Oriented Architecture: A Field Guide to Integr... (more)

Paths to SOA

Many are comparing notes on two well-publicized paths to achieving SOA. The bottom-up approach is currently the most common variety, where Web services are created on an "as need" basis to fulfill mostly integration-related requirements. These services are typically application specific and simply re-create traditional integration channels over the open Web services communication framework. The top-down approach, on the other hand, is one of analysis, deep thought, and patience. Service-orientation is infused into the business process layer so that services can be modeled in ali... (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)

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)

Best Practices for Transition Planning

Despite the magnitude of a migration to a service-oriented platform, the continuing uncertainty of critical WS-* standards, and the often thundering impact of large-scale SOA deployments, now is the time to start considering the move. The key to a successful transition is to find a spot of calm amidst the storm of activity surrounding SOA, and develop an intuitive plan that will guide your organization through a path of technical obstacles, organizational resistance, and ever-shifting industry trends. Count yourself lucky if you've had the foresight to coordinate your migration ... (more)