Quality Assurance (QA) plays an important role in IT product development. QA specialists use test design techniques along with other tools to detect errors and bugs.
Test design is a process of creating tests. Each test is aimed at checking a specific assumption. To check how a product behaves in different conditions, testers model a set of test cases. The specialist's task is to find a balance and detect the maximum number of errors with the minimum number of test scenarios. However, it is necessary to test all the critical cases, as the testing time is limited.