Re: [service-orientated-architecture] IBM's On-Demand Based on SOA
- An excellent article and made an interesting read. But solution-wise, I felt, they were getting overly complex by mixing various levels of abstraction of hardware and software. I understand that current investments and demand for tools to solve the corporate challenges of compliance with Sarbanes-Oxley and HIPAA. Both of these demand event-driven architecture with bulk hardware storage, tied into workflow based business processes. Companies like IBM, EMC, Sun and Hitachi are known to be working/competing in this domain -- a real life implementation of SOA + bulk [terra-bytes] storage systems + BPM + [ESB] Messaging + more.However, I really like making these different level of abstractions. Not because they really work that way in reality, but because of the bite-size chunks we humans can digest. I was wondering, and wanted to pass along, how IBM's "On-Demand" compares to TIBCO's "Real-Time" business:Best regards,Kaleem.
Gervas Douglas <gervasdouglas@...> wrote:
< information -- messages or documents (sometimes called business
objects). Their capabilities are defined by interfaces declaring
messages they can produce or consume, policy annotations declaring
quality of service required or provided, and choreography annotations
declaring behavioral constraints that must be respected in service
interactions. The actual implementation is hidden from the service
requester, thus SOAs are a convenient way to achieve application
integration by allowing new and existing applications to be quickly
combined into new contexts.
adapter follows the WebSphere� Business Integrator model, for
example. The adapter implements the service interface and transforms
messages into operation on the existing application.
Service Bus (ESB). This does not mean, however, that all interactions
require network communication and XML messages. The ESB provides
services with the "service" conceptual model, while allowing for
optimized communication and encodings of messages. In extreme cases,
the interaction between two services might bind to a local program
prior to deploy time, or very late through dynamic discovery
capabilities and interactions. The growing acceptance of XML as a
standard representation of structured information and of Web services
standards (often called WS-* standards) have greatly facilitated the
adoption of this architectural approach. The conceptual model of SOA
applies to the virtualization of both business functions and physical
infrastructure. It spans the construction of applications as well as
their deployment and management. Clients (users or businesses) only
see a collection of business services and are interested in their
quality of service, but the On Demand Operating Environment shields
them from the details of application assembly and service delivery.>>
You can read this at:
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