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    Microsoft Claims BizTalk Outpaces Enterprise Service Bus

    By
    Darryl K. Taft
    -
    August 31, 2005
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      Microsoft is addressing the applications integration issue with a strategy that goes beyond the ESB standard, according to a paper the company has posted.

      ESB (enterprise service bus) is an emerging standard for integrating enterprise applications in an implementation-independent fashion, at a coarse-grained service level via an event-driven and XML-based messaging engine.

      The term is considered a catch-all by some. Recently, in an attempt to develop an open-source Web services framework, companies such as Iona Technologies, WSO2, Infravio Inc., Sonic Software Corp. and Blue Titan Software Inc. teamed up to bring together various projects to deliver what would amount to an open-source ESB.

      However, sources said there was heated debate as to what to call it. While some wanted to call it an ESB, others did not. They settled on calling it a “Web services mediation framework.”

      According to a paper cited on a Weblog by Scott Woodgate, group product manager for BizTalk Server at Microsoft Corp., Microsofts integration strategy is to go beyond the ESB to meet user needs for messaging. The paper is entitled “Microsoft on the Enterprise Service Bus (ESB).”

      /zimages/2/28571.gifRead details here about Microsofts BizTalk and how it fits in the companys vertical strategy.

      “In short, if you are looking for ESB we can help you; but, on the other hand, we believe ESB is an incomplete implementation of integration, and we are price-point competitive to ESB with full integration server features,” Woodgate said in his blog.

      Indeed, “No single product or architecture satisfies all connected systems scenarios,” the Microsoft paper said, adding, “The recent buzz around ESBs is rivaled only by the ambiguity by which the term is defined.”

      “The problem is that theres no sensible single definition of ESB,” said Ronald Schmelzer, an analyst with ZapThink LLC, in Waltham, Mass. “The nominal one is that an ESB is some infrastructure for running distributed, reliable, event-driven services over an existing network. The problem is that not all ESB vendors define it the same way.

      “Some include a messaging infrastructure, while others dont. Some include business process management, but others dont. Some others still define ESB as not even a product, but rather an architectural pattern, which begs the question that if ESB is an architectural pattern, then what is SOA [service-oriented architecture]?

      “So, in the end analysis, the ESB term seems to be a transitional term to define the infrastructural approaches by which people implement SOA, but in the long term, it doesnt seem like the term will stick, as people become more specific about how they implement services in a loosely coupled way.”

      /zimages/2/28571.gifClick here to read more about Microsofts plans for BizTalk 2006.

      Microsofts strategy is to use BizTalk Server, WCF (Windows Communication Foundation, formerly known as “Indigo”), and the overall Windows platform to provide “message validation and transformation, business process orchestration and management, business activity monitoring and business rules management—all built on a foundation of industry-standard interoperable Web services,” the paper said.

      “I think they have something very similar to Artix in Indigo, so Id say they have something viable, although for Windows platforms only,” Eric Newcomer, chief technology officer at Iona in Waltham, Mass., said of the Microsoft strategy.

      “We are of course focused on fitting out legacy endpoints rather than Windows endpoints, and therefore we are oriented toward a development environment that assumes we are wrapping something else that already exists—i.e., service enabling an existing application. Microsoft, on the other hand, is assuming that you will be building most of your services from scratch in the Windows environment.”

      BizTalk provides business process orchestration, message transformation and business activity monitoring through designers and visual tools, while WCF provides a unified framework for building secure, reliable, transacted Web services, the paper said.

      In addition, BizTalk and WCF will be tightly integrated in future versions. The next release of BizTalk Server will feature a WCF adapter that will enable developers to incorporate WCF services into business process orchestrations, the paper said. Microsoft has developed an early version of the adapter.

      “Just as ASMX [ASP.Net for Web services] and WSE [Web Services Enhancements] provide BizTalks Web services capabilities today, subsequent releases of BizTalk will build directly on WCF to provide secure, reliable, transacted Web services support as a core component of BizTalk,” the paper said.

      Next Page: Why Microsoft says the BizTalk server beats ESB.

      Why Microsoft Says BizTalk

      Server Beats ESB”>

      BizTalk Server 2006 will be officially launched on Nov. 7 and is expected to be available in the first quarter of next year. BizTalk Server is an integration and business process server. In addition to its functions listed above, BizTalk Server maintains management and deployment of connected systems. Also on Nov. 7, Microsoft plans to launch Visual Studio 2005 and SQL Server 2005.

      Meanwhile, Microsoft said its strategy regarding BizTalk offers more value to users when compared to ESBs.

      “Customers choosing BizTalk Server may choose to deploy solutions utilizing only the ESB-like functionality or they may choose to deploy solutions utilizing the complete BPM [business process management] functionality,” the paper said.

      “With a consistent architecture there is no second product acquisition and learning cycle required and customers pay for the CPUs they have deployed.”

      In addition, Microsoft said its WCF Web services framework offers the broadest support for WS-* specifications.

      “In its first release, WCF will support the following WS-* specifications: SOAP [Simple Object Access Protocol], WSDL [Web Services Description Language], WS-Addressing, MTOM [Message Transmission Optimization Mechanism], WS-Policy, WS-Security, WS-Trust, WS-SecureConversation, WS-ReliableMessaging, WS-AtomicTransaction, and WS-Coordination as well as the foundational specifications of XML, XSD [XML Schema Definition] and XPath.”

      And in addition to supporting a variety of Web services specifications, the WCF programming model supports “ASMX, WSE, .Net Enterprise Services, .Net Remoting, and MSMQ [Microsoft Message Queuing]—enabling developers to build distributed applications with a range of communication requirements using a familiar programming language and development environment,” the paper said.

      The paper continued, “In contrast, ESBs typically rely on a fragmented approach to integrating applications that requires writing snippets of Java and JavaScript along with XSLT, XML schemas and WSDL files.”

      In essence, this wont cut it, Microsoft said. “In recent years, the ESB has become a new segment in the EAI [enterprise application integration] market that attempts to address the intersection of Web services and traditional Message-oriented middleware,” the paper said. “ESBs are a transitional technology that does not address the broad range of integration scenarios required by enterprises today.”

      Check out eWEEK.coms for the latest news, reviews and analysis about productivity and business solutions.

      Darryl K. Taft
      Darryl K. Taft covers the development tools and developer-related issues beat from his office in Baltimore. He has more than 10 years of experience in the business and is always looking for the next scoop. Taft is a member of the Association for Computing Machinery (ACM) and was named 'one of the most active middleware reporters in the world' by The Middleware Co. He also has his own card in the 'Who's Who in Enterprise Java' deck.
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