SOA - Service Oriented Architecture ( Basic Concept & Principle ) By Rajeev Tiwari

1. Service Oriented Architecture
An Introduction
Rajeev Tiwari

2. Evolution of SOA
Procedural Programming
Object Orient Programming
Service oriented Programming

3. Procedural Programming
Function is everything
Limitation:
How to reuse the same code?
Difficulties in code Management.

4. Object Orient Programming
Classes and Object are everything
Limitation:
how to communicate between applications, especially when they have
been written using different languages or technologies
Object oriented principles - Abstraction, Encapsulation, Inheritance, and
polymorphism
OOP increased the reusability and thus improved the code
management

5. Service oriented Programming
Service is everything
A service is a function that is well-defined, self-contained, and does not
depend on the context or state of other services
Services communicate with each other using messages. Messages are
standard formats which everyone (every service) can read and understand

6. Service oriented Programming
• Service Provider
• Service Repository
• Service Consumer

7. Patterns
In simple words Pattern is a solution to a problem in a context
Architectural Patterns
Architectural Pattern is something which solves our problem at sub system level or in
short module level.
Design Patterns
Design pattern talk about problems at class or function level

8. What is SOA?
SOA or Service oriented architecture is an architecture style for building
business applications by means of services

9. • Technology neutral
• Statelessness
• Standardized - WS*
• Loose coupling
• Reusability
• Consumable
• Abstracted
• Published
• Formal Contract
Basic Principles of SOA

10. Questions & Suggestions