Thomas Erl is the world’s top-selling SOA author and Series Editor of the Prentice Hall Service-Oriented Computing Series from Thomas Erl (www.soabooks.com). With over 100,000 copies in print worldwide, his books have become international bestsellers and have been formally endorsed by senior members of major software organizations, such as IBM, Microsoft, Oracle, BEA, Sun, Intel, SAP, CISCO, and HP. His most recent titles - SOA Design Patterns and Web Service Contract Design and Versioning for SOA - were co-authored with a series of industry experts and follow his first three books Service-Oriented Architecture: A Field Guide to Integrating XML and Web Services, Service-Oriented Architecture: Concepts, Technology, and Design, and SOA Principles of Service Design. Thomas is currently working with over 20 authors on a number of upcoming titles, including SOA Governance, SOA with .NET, SOA with Java, ESB Architecture for SOA, and SOA with REST. He is also overseeing the SOAPatterns.org initiative, a community site dedicated to the on-going development of SOA patterns. Thomas is the founder of SOA Systems Inc. (www.soasystems.com), a company specializing in vendor-neutral SOA consulting and training services. He is also the founder of the internationally recognized SOA Certified Professional program (www.soacp.com and www.soaschool.com). Thomas is a speaker and instructor for private and public events and is regularly invited to Gartner summits. He has delivered many workshops and keynote speeches, and is on the program committee for the International SOA Symposium. Articles and interviews by Thomas have been published in numerous publications, including SOA World Magazine, The Wall Street Journal and CIO Magazine. For more information, visit www.thomaserl.com.
One of the fundamental goals when designing service-oriented solutions is to
attain a reduced degree of coupling between services, thereby increasing the
freedom and flexibility with which services can be individually evolved.
Achieving the right level of coupling "looseness" is most often considered a
design issue that revolves around the service contract and the consumer
programs that form dependencies upon it.
However, for the service architect there are opportunities to establish
intermediate layers of abstraction within the service implementation that
further foster reduced levels of coupling between its internal moving parts
so as to accommodate the evolution and governance of the service itself.
These intermediate abstraction layers are created by the application of
Service Façade, a design pattern focused on intra-service design.
When designing a service, th... (more)
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)
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)
Enterprise-wide harmonization is a desirable and ideal target state that
fully supports pretty much everything SOA and service-orientation stand for.
For those that have achieved such a state, bless your standardized hearts.
You have accomplished something that has eluded many others. However, not
attaining this state does not mean you cannot successfully adopt SOA.
In some circles it has become common to view an SOA initiative as an
all-or-nothing proposition that demands an uncompromising commitment to an
enterprise-wide transformation effort. For those that subscribe to this vi... (more)
Like data normalization, the Service Normalization pattern is intent on
reducing redundancy and waste in order to avoid the governance burden
associated with having to maintain and synchronize similar or duplicate
bodies of service logic."
You can see it introduces the Pattern on our publisher page.
When designing data architectures, you can easily end up with different
databases or even different database tables containing the same or similar
data. This has been the root of many well documented data maintenance and
quality issues that helped establish data normalization as widel... (more)
Thomas Erl is the world’s top-selling SOA author and Series Editor of the Prentice Hall Service-Oriented Computing Series from Thomas Erl (www.soabooks.com). With over 100,000 copies in print worldwide, his books have become international bestsellers and have been formally endorsed by senior members of major software organizations, such as IBM, Microsoft, Oracle, BEA, Sun, Intel, SAP, CISCO, and HP. His most recent titles - SOA Design Patterns and Web Service Contract Design and Versioning for SOA - were co-authored with a series of industry experts and follow his first three books Service-Oriented Architecture: A Field Guide to Integrating XML and Web Services, Service-Oriented Architecture: Concepts, Technology, and Design, and SOA Principles of Service Design. Thomas is currently working with over 20 authors on a number of upcoming titles, including SOA Governance, SOA with .NET, SOA with Java, ESB Architecture for SOA, and SOA with REST. He is also overseeing the SOAPatterns.org initiative, a community site dedicated to the on-going development of SOA patterns. Thomas is the founder of SOA Systems Inc. (www.soasystems.com), a company specializing in vendor-neutral SOA consulting and training services. He is also the founder of the internationally recognized SOA Certified Professional program (www.soacp.com and www.soaschool.com). Thomas is a speaker and instructor for private and public events and is regularly invited to Gartner summits. He has delivered many workshops and keynote speeches, and is on the program committee for the International SOA Symposium. Articles and interviews by Thomas have been published in numerous publications, including SOA World Magazine, The Wall Street Journal and CIO Magazine. For more information, visit www.thomaserl.com.
Derek Granath
Tom Flynn
Patrick Pushor
Bob Evans
