1 / 19

Service-Oriented Application Integration

This article discusses service-oriented application integration, including the sharing of common application services and information, the infrastructure required, web services, their description and discovery, and the benefits and challenges of application integration.

blairl
Download Presentation

Service-Oriented Application Integration

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Service-Oriented Application Integration

  2. Service-Oriented Application Integration • Enterprises share common application services and information • Define application services they can share • Provide infrastructure for application service sharing • Examples: • Sharing common logic to process customers’ credit • Calculate shipping costs

  3. Service-Oriented Application Integration • Built on multitier client/server architecture • Set of shared services on a common server • Services may be reused • Originally created for a single-organization use • Allows for loosely coupled applications

  4. Service-Oriented Application Integration • Requires changes to most enterprise and B2B applications to take advantage • Expensive proposition • Concern about creating applications that share services not under direct control

  5. Service-Oriented Application Integration • Web Services • Ability to access remote application services through a well-defined interface, directory, and transport protocol • Web Services Description Language (WSDL) • Universal Description, Discovery and Integration (UDDI) • Simple Object Access Protocol (SOAP)

  6. Web Services Description Language (WSDL) • Provides a standard on interfaces between client and server • Defines an XML grammar to describe network services • Recipe to automate the way applications communicate

  7. Universal Description, Discovery and Integration (UDDI) • Set of databases where businesses register their Web services • Allows other organizations to find Web service • Understand how to access service programmatically • Understand the interfaces employed

  8. Web Services • Locate the service using UDDI • Determine the interface definition using WSDL • Application services exposed by a company that are discoverable and accessible by other organizations • Example: reserving a flight, calculating tariffs • Discrete business services • Value to many organizations

  9. Web Services • Web services tend to be created in a series of small, low risk steps • Combine information and applications that exist in local and remote information systems • Redundant application services at two or more systems • New application need

  10. Web Services • Event-driven Web Services – architecture that deals more with information movement than application service aggregation • EX: moving order information from system to system and company to company to support purchase of a car

  11. Web Services • Composite-application Solutions – architecture that requires many application services to aggregate into a single instance of an application

  12. Web Services • Autonomous-distributed Solutions – architectures where Web services are tightly coupled, appear as a single application • Very future architecture

  13. Web Services • Missing Pieces • No mechanism to leverage user interfaces • Lack support for authentication, encryption and access control • Lack ability to authenticate publishers or consumers of services

  14. Application Integration • Rule • Agreed-upon set of conditions • Example: employees may not fly first class on flights of less than 5,000 miles • Rules are built into applications to control information flow • Rules can control the flow of information between enterprises

  15. Application Integration • Logic • Sequence of instructions in a program • Example: when button is pressed, pop up this screen • Logic tends to be generated differently by different programmers, i.e., form of art • Sequential processing • Selection • Iteration

  16. Application Integration • Data • Information that is shared between applications, computers, or humans • Objects • Data and business services bound as objects

  17. Amazon.com • Books? • CD’s • Technology Company?

  18. Amazon.com • Amazon Web Services • Patented one-click purchasing system • Tap quickly into sales data for particular products • Merchants & developers can get free access to services • Can use services from any outpost on the Web

  19. Amazon.com • May sell wares to 37 million customers assembled at Amazon.com • Amazon takes a commission of 15% • Is Amazon an on-line mall? • Some of the retailers that use its e-commerce system • Lands’ End • Circuit City Store • Target Corp • Toys ‘R’ Us

More Related