SOA???The evolution

soa is a collection of many services in the network.These services communicate with each other and also involves data exchange and service coordination.Previously SOA was using Dcom objects.But instead of Dcom now web is used.Since web is really a rich collection of various resources SOA has very much to do with the web services.Some of the reasons which makes soa very dependable are:

1)Firstly its platform independent.So the clients can use any software or hardware of their choice.

2)SOA supports incremental development, deployment and maintainence.

3)Its very loosely coupled,hence very robust and scalable.

All the above features make soa very demanding and deployed all over..

The evolution of soa has started from late 80's or 90's.Initially the business transactions or any other transactions took place directly.but later the middle parties or middlewares came into existence.So some kind of interaction mechanism was needed to interact between service provider ,client and middle ware.

All this factors led to the growth and evolution of SOA.