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Overview of the BizTalk ESB Toolkit

The ​Microsoft BizTalk ESB Toolkit 2.1 extends the capabilities of BizTalk Server 2010 to support a loosely coupled messaging architecture. Most developers are familiar with code-oriented, procedural, or object-oriented development paradigms; however, when starting to develop BizTalk solutions, developers tend to overlook the message-oriented capabilities of BizTalk Server.

BizTalk Server includes a powerful publish/subscribe mechanism that works by creating and filling subscriptions. When a new message arrives in the BizTalk Message Box database, a message agent identifies subscribers and sends the message to any endpoints that have subscriptions. Subscriptions can be created in several ways, including binding an orchestration to a receive port, having a correlated receive waiting for a message, or creating a send port with a filter condition that matches a property of the message (such as the type, the receive point, or the value of a routable property).

By providing this efficient and scalable approach, BizTalk Server enables developers to create a series of discrete sub-processes, define the types of messages that trigger their invocation, and not worry about the sequence. A process initiated by the arrival of a message performs its processing on the message; after it processes the message, it can deliver this or another message to the Message Box database, which, in turn, may activate one or more sub-processes.

Microsoft provides key building blocks that are required for building comprehensive Service-Oriented Infrastructures, including Windows Server 2008, the .NET Framework, and BizTalk Server 2010. The ​Microsoft BizTalk ESB Toolkit 2.1 is based on BizTalk Server 2010 because it provides the basis for the most common ESB services, including the following:

  • Message routing

  • Message validation

  • Message transformation

  • Extensible adapter framework for connectivity

  • Service orchestration

  • Business rules engine

  • Business activity monitoring

  • Web service and WS-* integration (WCF adapter)

The ​Microsoft BizTalk ESB Toolkit 2.1 extends the functionality of BizTalk Server 2010 to provide a range of new capabilities focused on building robust, connected, service-oriented applications. The ​Microsoft BizTalk ESB Toolkit 2.1 treats BizTalk Server components as individual units of work that can be connected, as desired, to form loosely coupled solutions. The following are some of the core capabilities that the ​Microsoft BizTalk ESB Toolkit 2.1 provides to enhance the capabilities of Microsoft BizTalk Server 2010:

  • Policy driven mediation. The ​Microsoft BizTalk ESB Toolkit 2.1 does the following:

    • It provides itinerary-based routing that supports lightweight service composition at the time of message publication. This approach allows dynamic discovery of service endpoints and mediation requirements for message routing using a service registry or the business rules policy.

    • It adds support for policy centralization for itinerary-based routing using server-side itineraries that are dynamically resolved and added to the message context after a message is received. Managing itineraries in a central location enables the processing of messages from clients that are completely unaware of how their requests are being routed.

    • It uses an enhanced version of the ​Microsoft BizTalk ESB Toolkit 2.1 Resolver and Adapter Provider Framework, which enables dynamic resolution of endpoints and transformation requirements; this effectively decouples the consumer from the services.

  • Connecting systems. The ​Microsoft BizTalk ESB Toolkit 2.1 does the following:

    • It provides pipeline components that normalize XML message namespaces.

    • It integrates with JMS through the WebSphere MQ adapter for Microsoft BizTalk Server 2010.

    • It facilitates message exchange patterns that enable dynamic service aggregation, message routing, message validation, and message transformation.

    • It supports service endpoint discovery from registry and repository integration using UDDI 3.0.

    • It supports message routing through line-of-business (LOB) adapters by using the WCF-Custom BizTalk Adapter for BizTalk Server 2010.

  • Management and monitoring. The ​Microsoft BizTalk ESB Toolkit 2.1 does the following:

    • It provides exception management framework and tools.

    • It facilitates message repair and resubmission using a management portal, shipped as a sample application. This Web application also supports customizable e-mail notifications when a specific error occurs.

    • It allows BizTalk Server endpoint and registry integration, management, and publication.

    • It provides a centralized repository of versioned server-side itineraries.

    • It supports reporting and analytics for BizTalk Server 2010 applications.

    • It includes Business Activity Monitoring components to track itinerary service execution, including start time, end time, and service mediation sequence.

  • SOA governance. The ​Microsoft BizTalk ESB Toolkit 2.1 does the following:

    • It integrates with third-party SOA governance solutions, including embedded management agents for BizTalk Server 2010 from AmberPoint and SOA Software.

For more information about Microsoft BizTalk Server 2010, see the Microsoft BizTalk Server(http://go.microsoft.com/fwlink/?LinkId=185961)site.

For the latest news, forums, and support for the ​Microsoft BizTalk ESB Toolkit 2.1, see BizTalk ESB Toolkit Forums(http://go.microsoft.com/fwlink/?LinkID=185951&clcid=0x409)on the MSDN Forums.

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