what is system integration testing or UAT testing ?

Answer Posted / tulip

System testing: tests whether the whole system/product behaves as defined in the requirement specification.

System Integration testing is performed by Testers. As the name suggests two or more systems are integrated and the integrated systems need to be tested. Usually system integration testing is performed after system testing of the individual systems.
For example, a trading system in an investment bank will interact with the stock exchange to get the latest prices for its stocks and shares on the international market.

User Acceptance testing: testing by user representatives to check the system meets their business needs.

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