What is SOA?

Scott Bown

This presentation

SOA Taster Basic concepts allowing completion

of your SOA personal objective Time for discussion Not a in-depth detailed explanation Not how to deploy at this company

Summary

What is SOA? What is a Service? Key Principles Governance and ESB XML Web services Where next?

Service-Oriented Architecture

Not a technology or a product There’s no install file Not Java/C/RPG/Groovy etc

It’s a style of design: Architecture Methodology Organisation

What’s a service?

"A service is a discoverable resource that executes a repeatable task, and is described by an externalized service specification.“

Business alignment Specifications Reusability Agreements Hosting and discoverability Aggregation

Key Principles of SOA

Explicit Boundaries Shared Contract and Schema Interoperability Loose coupling Reuse Language/Vendor agnostic

Governance

Managing the portfolio of services

Managing the service lifecycle

Using policies to restrict behavior

Monitoring performance

Enterprise Service Bus (ESB)

Artifact Store

Like the common libraries database but for services

Meta information about the services How to use them What they do Business contacts

Technology: XML

Open document based standard for standardised information interchange

Human readable Example:

<dept id=“IT”><employee id=“123”>

<name>Scott</name></employee>

</dept>

Technology: WebServices

Fit some of the SOA ideals Programming

language agnostic Contracts between

services Discoverable services Standardised

specifications

Is using web services using SOA?

A: ??

Are we currently using SOA principles?

A. ??

Key things to take away

SOA is a way of architecture Services - Cohesive pieces of

functionality that are autonomous Artifact store – stores service details

so you can reuse EBS – connects everything together Governance – control and

monitoring

What next?

Learn and use XML Learn and use Web services Create services (programs) that are

autonomous and loosely coupled

Resources

www.ibm.com/software/solutions/soa www.eclipse.org/swordfish Google: SOA [Don’t do an image search ‘soa’]

IBM DevWorks XML/WS tutorials and free ebooks