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What is this Orchestration : Orchestration is the traditional way of handling interactions between different services in Service-Oriented Architecture (SOA). With orchestration process, there is typically one controller that acts as the “orchestrator” of the overall service interactions. This typically follows a request/response type pattern. For example, if three services needed to be called in a particular order, the orchestrator makes a call to each one, waiting for a response before calling the next. 

Spring Framework : Facts:Spring Framework is a lightweight framework.Do you know reason.Read out Proof: As Spring follow MVC model as following  Fig.1.MVC model  Does the image show that spring framework is light weight framework.If you are new then you might be confuse.So Don't be confuse go to the below coding example which proves it's light weight properties. Reason.1-> Use Of POJO's  POJO means  Plain Old Java Object . It refers to a Java object (instance of definition) that isn't bogged down by framework extensions. For example, to receive messages from JMS, you need to write a class that implements the MessageListener interface. Coming to a simple example. Here College class has it's own property name & Address.It include references s1 for student type class & similarly t1 for Teacher type class.As there is a case of Assciation(HAS-A) relationship between college and student.Similarly to teacher also.But if you ana