Weblogic Authors: Yeshim Deniz, Elizabeth White, Michael Meiner, Michael Bushong, Avi Rosenthal

Related Topics: Weblogic

Weblogic: Article

Paths to SOA

High Roads, Low Roads, and Roads Less Traveled

Service Deployment
The implementation stage brings with it the joys of installing and configuring distributed components, service interfaces, and any associated middleware products onto production servers. Typical issues arising during this phase include:

  • How will services be distributed?
  • Is the infrastructure adequate to fulfill the processing requirements of all services?
  • How will the introduction of new services affect existing services and applications?
  • How should services used by multiple solutions be positioned and deployed?
  • How will the introduction of any required middleware affect the existing environment?
  • Do these services introduce new versions of service descriptions that will need to be deployed alongside existing versions?
  • What security settings and accounts are required?
  • How will service pools be maintained to accommodate planned or unforeseen scalability requirements?
  • How will encapsulated legacy systems with performance or reliability limitations be maintained and monitored?
Service Administration
Once services are deployed, standard application management issues come to the forefront. These are similar in nature to the administration concerns for distributed, component-based applications, except that they may also apply to services as a whole (as opposed to services belonging to a specific application environment). Issues frequently include the following.
  • How will service usage be monitored?
  • What form of version control will be used to manage service-description documents?
  • How will messages be traced and managed?
  • How will performance bottlenecks be detected?
Note that though SOA governance comes into effect at this stage, it is a critical part of service-oriented solution delivery that must be planned for well ahead of time.

SOA Delivery Strategies
These life-cycle stages represent a simple, sequential path to building individual services. We now need to organize them into a process that can:

  • accommodate our preferences with regards to which types of service layers we want to deliver
  • coordinate the delivery of application, business, and process services
  • support a transition toward a standardized SOA while helping us fulfill immediate, project-specific requirements
The last item on the above list poses the greatest challenge. The success of SOA within an enterprise is generally dependent on the extent to which it is standardized when it is phased into business and application domains. However, the success of a project delivering a service-oriented solution is generally measured by the extent to which the solution fulfills expected requirements within a given budget and timeline.

To address this problem, we need a strategy. This strategy must be based on an organization's priorities in order to establish the correct balance between the delivery of long-term migration goals with the fulfillment of short-term requirements.

The top-down, bottom-up, and agile strategies we introduced at the beginning of this article each address this problem with differing priorities and practical considerations. The following three sections provide process descriptions and explore the pros and cons of each approach.

The Top-Down Strategy
This is very much an "analysis first" approach that requires not only business processes to become service-oriented, it also promotes the creation (or realignment) of an organization's overall business model. This process is therefore closely tied to or derived from an organization's existing business logic, and it commonly results in the creation of numerous reusable business and application services. The top-down approach will typically contain some or all of the steps illustrated and described in Figure 2. Note that this process assumes that business requirements have already been collected and defined.

Step 1: Define relevant enterprise-wide ontology
Part of what an ontology establishes is a classification of information sets processed by an organization. This results in a common vocabulary, as well as a definition of how these information sets relate to each other. Larger organizations with multiple business areas can have several ontologies, each governing a specific division of business. It is expected that these specialized ontologies all align to support an enterprise-wide ontology.

If such a business vocabulary does not yet exist for whatever information sets a solution is required to work with, then this step requires that it be defined. A significant amount of up-front information gathering and high-level business analysis effort may therefore be required.

Step 2: Align relevant business models (including entity models) with new or revised ontology
Once the ontology is established, existing business models may need to be adjusted (or even created) in order to properly represent the vocabulary provided by the ontology in business modeling terms. Entity models in particular are of importance, as they can later be used as the basis for entity-centric business services.

Steps 3 and 4: Perform service-oriented analysis and service-oriented design
The aforementioned service-oriented analysis and service-oriented design processes are completed.

Step 5: Develop the required services
Services are developed according to their respective design specifications and the service descriptions created in Step 4.

More Stories By Thomas Erl

Thomas Erl is a best-selling IT author and founder of Arcitura Education Inc., a global provider of vendor-neutral educational services and certification that encompasses the Cloud Certified Professional (CCP) and SOA Certified Professional (SOACP) programs from CloudSchool.com™ and SOASchool.com® respectively. Thomas has been the world's top-selling service technology author for nearly a decade and is the series editor of the Prentice Hall Service Technology Series from Thomas Erl, as well as the editor of the Service Technology Magazine. With over 175,000 copies in print world-wide, his eight published books have become international bestsellers and have been formally endorsed by senior members of many major IT organizations and academic institutions. To learn more, visit: www.thomaserl.com

Comments (0)

Share your thoughts on this story.

Add your comment
You must be signed in to add a comment. Sign-in | Register

In accordance with our Comment Policy, we encourage comments that are on topic, relevant and to-the-point. We will remove comments that include profanity, personal attacks, racial slurs, threats of violence, or other inappropriate material that violates our Terms and Conditions, and will block users who make repeated violations. We ask all readers to expect diversity of opinion and to treat one another with dignity and respect.

IoT & Smart Cities Stories
Early Bird Registration Discount Expires on August 31, 2018 Conference Registration Link ▸ HERE. Pick from all 200 sessions in all 10 tracks, plus 22 Keynotes & General Sessions! Lunch is served two days. EXPIRES AUGUST 31, 2018. Ticket prices: ($1,295-Aug 31) ($1,495-Oct 31) ($1,995-Nov 12) ($2,500-Walk-in)
Andrew Keys is Co-Founder of ConsenSys Enterprise. He comes to ConsenSys Enterprise with capital markets, technology and entrepreneurial experience. Previously, he worked for UBS investment bank in equities analysis. Later, he was responsible for the creation and distribution of life settlement products to hedge funds and investment banks. After, he co-founded a revenue cycle management company where he learned about Bitcoin and eventually Ethereal. Andrew's role at ConsenSys Enterprise is a mul...
Nicolas Fierro is CEO of MIMIR Blockchain Solutions. He is a programmer, technologist, and operations dev who has worked with Ethereum and blockchain since 2014. His knowledge in blockchain dates to when he performed dev ops services to the Ethereum Foundation as one the privileged few developers to work with the original core team in Switzerland.
René Bostic is the Technical VP of the IBM Cloud Unit in North America. Enjoying her career with IBM during the modern millennial technological era, she is an expert in cloud computing, DevOps and emerging cloud technologies such as Blockchain. Her strengths and core competencies include a proven record of accomplishments in consensus building at all levels to assess, plan, and implement enterprise and cloud computing solutions. René is a member of the Society of Women Engineers (SWE) and a m...
Digital Transformation and Disruption, Amazon Style - What You Can Learn. Chris Kocher is a co-founder of Grey Heron, a management and strategic marketing consulting firm. He has 25+ years in both strategic and hands-on operating experience helping executives and investors build revenues and shareholder value. He has consulted with over 130 companies on innovating with new business models, product strategies and monetization. Chris has held management positions at HP and Symantec in addition to ...
The challenges of aggregating data from consumer-oriented devices, such as wearable technologies and smart thermostats, are fairly well-understood. However, there are a new set of challenges for IoT devices that generate megabytes or gigabytes of data per second. Certainly, the infrastructure will have to change, as those volumes of data will likely overwhelm the available bandwidth for aggregating the data into a central repository. Ochandarena discusses a whole new way to think about your next...
CloudEXPO | DevOpsSUMMIT | DXWorldEXPO are the world's most influential, independent events where Cloud Computing was coined and where technology buyers and vendors meet to experience and discuss the big picture of Digital Transformation and all of the strategies, tactics, and tools they need to realize their goals. Sponsors of DXWorldEXPO | CloudEXPO benefit from unmatched branding, profile building and lead generation opportunities.
Dynatrace is an application performance management software company with products for the information technology departments and digital business owners of medium and large businesses. Building the Future of Monitoring with Artificial Intelligence. Today we can collect lots and lots of performance data. We build beautiful dashboards and even have fancy query languages to access and transform the data. Still performance data is a secret language only a couple of people understand. The more busine...
All in Mobile is a place where we continually maximize their impact by fostering understanding, empathy, insights, creativity and joy. They believe that a truly useful and desirable mobile app doesn't need the brightest idea or the most advanced technology. A great product begins with understanding people. It's easy to think that customers will love your app, but can you justify it? They make sure your final app is something that users truly want and need. The only way to do this is by ...
DXWorldEXPO LLC announced today that Big Data Federation to Exhibit at the 22nd International CloudEXPO, colocated with DevOpsSUMMIT and DXWorldEXPO, November 12-13, 2018 in New York City. Big Data Federation, Inc. develops and applies artificial intelligence to predict financial and economic events that matter. The company uncovers patterns and precise drivers of performance and outcomes with the aid of machine-learning algorithms, big data, and fundamental analysis. Their products are deployed...