Service Oriented Architectures

Presentation By:Clifton SweeneyNovember 3rd 2008

What are Service Oriented Architectures? (SOA)

Provides methods for systems development and integration.

What does a business need?

Highly distributable communications and integration backbone.

What are we discussing today?

Technologies that make up SOA. Approaches that unify concepts in SOA. Extensions of the original concept.

Goals Streamline existing business

processes. Streamline a version of SOA (xSOA) for

widespread use. Incorporate the use of Web Service. Seem-less running of programs

throughout the network to eliminate barriers.

General Architecture Structures large applications as an

ad hoc collection of smaller modules called services.

Focused on creating a design style.

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Bound Pairs Service interface

Defines the identity of a service. Service implementation

Implements the work to be done.

Services - Characteristics Everything is a service. Everything is autonomous. Everything is invocable.

Services - Roles Client

SOAP to XML Provider

Services - Roles Service Brokering

Trusted party that forces providers to adhere to common practices.

Enterprise Service Bus Software architecture construct.

Referred to as middleware. Open bus designed for implementation,

deployment, and management of SOA based solutions.

Enterprise Service Bus Responsibilities

Control flow and translations of all messages between services.

Pulls together applications to create assemblies of services to form composite business processes.

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Real world example

Successful ESB requirements

Dynamic connectivity Integration capabilities Security Monitoring Health Scalability for future

Enabling Technology in ESB ESB fuse four types of technologies:

Integration brokers Application servers Business process management Adapters

Integration Brokers

Application Servers

Business Process Management

BPM is the new generation of technology that provides end to end visibility and control over all parts of a long lived, multi step information request that spans multiple applications and humans in multiple enterprises.

What does that mean? BPM software solutions in an ESB

include: Workflow related processes Process analysis Visualization techniques

www.pega.com

Adapters Provide connectivity Semantic disambiguation Translation services between apps

and collaborations.

Adapters Con’t

Extending SOA (xSOA) SOA could be extended to support

capabilities such as service orchestration, intelligent routing, provisioning, and service management.

Guarantee the integrity of data and security of messages.

xSOA Is an attempt to streamline SOA. Its layers embrace a multi-

dimensional, separation of concerns in such a way that each layer defines a set of constructs, roles, and responsibilities.

xSOA con’t

xSOA Con’t xSOA incorporates a service

composition tier to offer necessary roles and functionality for the consolidation of multiple services into a single composite service.

Successfully build and deploy a distributed SOA you need?

Service enablement Service orchestration Deployment Management

Questions?