start orchestration shape is used to start another orchestration asynchronously,the shape causes a new instance of the another orchestration via MessageBox.This MessageBox hop adds a new performance overhead on a application.
So the question is why and when use this Start shape ..?
-consider a case where the outcome of the another orchestration is not required and is a time consuming process.
so can create a new sub orchestration and host that on a another server.so the main orchestration continues its processing while the sub orchestration processing is taken care by another host.hence does not affect the processing/latency of the main orchestration.
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