新的起點 新的開始

          快樂生活 !

          Understanding SOA, ESB and Web Services

          Understanding SOA, ESB and Web Services

          Service-oriented architecture (SOA) is an architectural approach to development that turns traditional techniques upside down. SOA encourages organizations to think in terms of actual business services and the associated data, rather than low level technology details. Rather than developing applications from the ground up, SOA frees organizations to start with high level business definitions for data, interfaces, documents, and processes. SOA then maps these high level service definitions onto new or existing infrastructure, regardless of the details, location, or programming language in which systems were written.

          Business Agility: The Driving Force for Service-Oriented Architecture

          Organizations in all sectors of business and government are pursuing Service Oriented Architecture initiatives in response to their need for increased business agility. Over the past decades, organizations have built, purchased, and customized infrastructure and business applications to the point that their challenge is no longer in automating a particular point business function, but in accessing data and functionality in these systems more efficiently, and combining functionality from multiple systems to more closely represent their true, composite, business processes. Implementation of a Service-Oriented Architecture enables companies to better leverage their existing technology assets, gain increased transparency into their data and processes in real-time, synchronize redundant systems, and map new and existing business processes onto their myriad systems to seamlessly align their IT infrastructure with their business needs.

          SOA: The Architectural Approach

          SOA refers to defining services or interfaces - usually coarse grained business services, such as "issue a purchase order", for example - as reusable pieces of software that can be invoked by other applications and combined in a loosely coupled manner to model complete business processes. The concept of SOA is not new. In fact, there have been many enabling technologies for building SOA over the years, including CORBA, DCOM, and even MQSeries. These technologies provided advancements at the time, but were limiting in a number of ways. So why all the fuss over Web services as an enabler for SOA?

          Download Principles of SOA Design whitepaper.

          Web services: The Enabling Technology for SOA

          "Web services" describes a standardized way of constructing and integrating applications using open standards over an Internet backbone. What makes the application of Web services as an enabling technology for SOA so powerful is that for the first time we have an underlying mechanism that uses well defined, standardized interfaces, effectively freeing the calling program from the need to deal with the intricacies of the underlying applications. Web services are self-describing, use widely accepted standards, and are accessible over a wide variety of transports, including (and especially) HTTP.

          An exciting by-product of the prevalence of Web services is that new standards are being rapidly developed and adopted to describe functionality that has previously been available only through proprietary protocols. As an example, proprietary Business Process Modeling (BPM) products, which require specialized developer skill-sets and force vendor lock-in, have been commercially available for years. Recently though, all of the major software vendors have converged around the Business Process Execution Language (BPEL4WS) standard put forth by the OASIS standards committee, providing a welcome, Web services standards-based alternative for creating sophisticated business processes (including long running, asynchronous processes).

          Similarly, the WS-ReliableMessaging standard provides guaranteed message delivery through the use of Web services and XML over HTTP, enabling standards-based message delivery inside and across the firewall, providing a complement or even a replacement to JMS. Development and widespread adoption of additional standards are providing Web services based alternatives to the variety of proprietary functionality on the market, providing lower cost, simpler ways to harness your IT assets, without requiring vendor lock-in or proprietary developer skill-sets. As one leading industry analyst recently wrote, "the use of the Web services stack as a cheaper, simpler EAI alternative is a no-brainer."

          Read more on Web services.

          Enterprise Service Bus: The Product Implementation

          The Enterprise Service Bus, or ESB, is a new product category at the intersection of SOA, application integration, and business process modeling. The ESB promotes a fast, straightforward way to build a Service-Oriented Architecture, and provides a standards-based, simpler approach to application integration. The Enterprise Service Bus is an infrastructure-agnostic suite of products that provide Web service enablement, processing, and monitoring capabilities, graphical data mapping and transformation, routing, and orchestration capabilities that leverage your existing infrastructure of application servers, transports, applications, and data. Use of an ESB typically results in an order of magnitude better ROI than traditional integration approaches.

          To learn more about Cape Clear ESB, download the ESB whitepaper.

          If you are interested in finding out more about ESB and SOA, see:

          posted on 2007-03-21 15:50 advincenting 閱讀(279) 評論(0)  編輯  收藏


          只有注冊用戶登錄后才能發表評論。


          網站導航:
           

          公告

          Locations of visitors to this pageBlogJava
        1. 首頁
        2. 新隨筆
        3. 聯系
        4. 聚合
        5. 管理
        6. <2025年7月>
          293012345
          6789101112
          13141516171819
          20212223242526
          272829303112
          3456789

          統計

          常用鏈接

          留言簿(13)

          隨筆分類(71)

          隨筆檔案(179)

          文章檔案(13)

          新聞分類

          IT人的英語學習網站

          JAVA站點

          優秀個人博客鏈接

          官網學習站點

          生活工作站點

          最新隨筆

          搜索

          積分與排名

          最新評論

          閱讀排行榜

          評論排行榜

          主站蜘蛛池模板: 慈溪市| 富平县| 岳普湖县| 白玉县| 万安县| 临高县| 宣城市| 班玛县| 河津市| 长宁区| 安达市| 当雄县| 香河县| 彭水| 奎屯市| 饶阳县| 牙克石市| 梁河县| 鹿泉市| 富顺县| 灵宝市| 厦门市| 张家川| 防城港市| 通山县| 五寨县| 蕉岭县| 额济纳旗| 台江县| 衡水市| 田阳县| 班玛县| 鸡西市| 新余市| 子洲县| 柯坪县| 修武县| 昌吉市| 商洛市| 安宁市| 弥勒县|