What is the difference between SIT and IST?

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What is the difference between SIT and IST?..

Answer / sreedevi

System Integration Testing is a testing process that shakes
down source code developed and fixes any variance before
proceeding to the next testing phase. To complete (or exit)
SIT, there must be fewer variances than can be tolerated.

SIT is similar to Unit Test.

Interconnect Stress Test (IST) is an accelerated stress test
method used to evaluate the integrity of the Printed Circuit
Board (PCB) interconnect structure. It's an objective test
whose results are timely, repeatable, reproducible and unique.

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What is the difference between SIT and IST?..

Answer / krishna

System Integration Testing :
It is a process of Integrating two or more systems/components using same build.

Ex: ATM m/c integrating various bank systems during any transaction.

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