We use cookies and other similar technologies (Cookies) to enhance your experience and to provide you with relevant content and ads. By using our website, you are agreeing to the use of Cookies. You can change your settings at any time. Cookie Policy.

To date the majority of focus on service-oriented architecture (SOA) and Web services has been on standards and the technical details of defining interfaces. While a standard interface definition is a critical enabler of SOA, it is only the first step to achieving the full benefits. Increased business agility and decreased costs are dependent upon well-defined, well-managed, reusable services that are fast and easy to connect to. Unfortunately, there is no mathematical theory or methodology that can tell a developer whether the component or service is at the correct level of granularity to maximize reuse. The most commonly used method of creating business services is the trial-and-error approach. This usually means defining services in the context of a particular business process, then revising for reuse in the next solution. This article presents an event-driven approach to designing adaptable and reusable business services.



Service Design Goals

The primary goal for good service design is that it be reusable and adaptable. If a service is both, then over time it is far more likely to deliver a high ROI through use on subsequent projects. However, when designing a service for the first time, it can be difficult to determine whether a service will accomplish these goals. Here are some guidelines to consider when developing services to maximize reuse.

  • Services should be standards based. Standards help ensure that services can be flexibly deployed on different platforms, and can be easily accessed from other platforms.
  • Services should have event driven interfaces. The business service should be initiated by a business event, a system event or a temporal event (something that needs to happen due to time, such as stock market closing, or end of the month event). Similarly, the outputs of the service should be an event which can kick off a process in a workflow. Services which rely on a request/reply model of interaction are less adaptable to change. They also don’t scale as well in high level production environments.
  • Services should have loose coupling with the presentation layer. Companies need the flexibility to purchase or deploy specific functional components and still present a unified interface to the user. Services that deliver the presentation layer with the back-end functionality inhibit flexibility. They are less reusable in future solutions.
  • Services should have loose coupling with the persistence layer. Companies need business services that will work with the back end data sources already in place. To maximize business agility and reuse of IT assets, businesses services need to be event driven – not data driven.
  • Services should have tight cohesion. Business services need clear functional boundaries which do not overlap with other systems, thereby creating redundancy. If the company already has the functionality in place, they should not have to build or purchase it again. Companies that develop highly granular services that can be flexibly combined into higher level business services will reap a higher ROI.
  • Services should accommodate rules-based processing. To maximize reuse, the business service needs to be customizable for each new solution. The ability to declaratively define business rules is most adaptable to change. The services can be localized more easily and quickly.

-1-

1  2  

   Next Page

Explore Our Topics

  • EDITOR'S BRIEFING
  • Virtual Conferences
  • Webinars
  • Roundtables

BPM in Action

March 10, 2011

The sixth annual BPM in Action 2011 Virtual Conference will explore cutting-edge market developments in BPM and describe how to leverage them for improved business operation and performance. More

View All Virtual Conferences

Smart Case Management: Why It's So Smart.

Date:Nov 05, 2009
Time:12:00 PM ET- (17:00 GMT)

REGISTER TODAY!

Date:Oct 29, 2009
Time:15:00 PM ET- (19:00 GMT)

REGISTER TODAY!
View All Roundtables
  • Research Library
  • Podcasts
  • News

Joe McKendrick: Part II of II: Designing Evolve-ability into SOA and IT Systems

In part two of Joe McKendrick's recent podcast with Miko Matsumura, chief strategist for Software AG, they talk about how SOA and IT systems need to change and grow and adapt with the organization around it.

Listen Now

Phil Wainewright: Helping Brands Engage with Social Media

Phil Wainewright interviews David Vap, VP of products at RightNow Technologies, and finds out how sharing best practices can help businesses understand how best to engage with online communities.

Listen Now

Peter Schooff: Making Every IT Dollar Result in a Desired Business Outcome: Scott Hebner of IBM Rati

Scott Hebner, Vice President of Marketing and Strategy for IBM Rational, discusses a topic on the top of every company's mind today: getting the most from IT investments.

Listen Now

Jessica Ann Mola: Where Will BI Fit In? Lyndsay Wise Explains

In BI, this tough economy and the increasing role of Web 2.0 and MDM are certainly topics on people's minds today. WiseAnalytics' Lyndsay Wise addresses each of them in this informative podcast.

Listen Now

Dennis Byron: Talking with...Deepak Singh of BPM Provider Adeptia

Deepak Singh, President and CTO of Adeptia, joins ebizQ's Dennis Byron in a podcast that gets its hand around the trend of industry-specific BPM.

Listen Now
More Podcasts
  • Most Popular
  • Quick Guide
  • Most Discussed

Quick Guide: What is BPM?

Learn More

Quick Guide: What is Event Processing?

Smart event processing can help your company run smarter and faster. This comprehensive guide helps you research the basics of complex event processing (CEP) and learn how to get started on the right foot with your CEP project using EDA, RFID, SOA, SCADA and other relevant technologies. Learn More

Quick Guide: What is Enterprise 2.0?

A lot of people are talking about Enterprise 2.0 as being the business application of Web 2.0 technology. However, there's still some debate on exactly what this technology entails, how it applies to today's business models, and which components bring true value. Some use the term Enterprise 2.0 exclusively to describe the use of social networking technologies in the enterprise, while others use it to describe a web economy platform, or the technological framework behind such a platform. Still others say that Enterprise 2.0 is all of these things. Learn More