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Quality Assurance engineers aim to help create quality products. It’s not about finding bugs, not about simple testing. The main function of a QA engineer is to prevent defects, and therefore ensure the quality of the development process and its results. This is a broad statement, so in this article, I will try to cover a few specifics to help you understand the business value of QA.

Defect aka bug is a flawed piece of code that causes the system to fail to perform its required function. It doesn’t always mean that something doesn’t work. It may just work incorrectly.

So what do QA engineers do? They:

identify weaknesses and inconsistencies in the product at all project stages;
help define project requirements;
provide comprehensive information about the level of quality of a product;
test the product during all phases of the software development lifecycle (SDLC).
It’s important to note that QAs are interested in making any product user-friendly, be it functionality or design. For this, QAs closely communicate with all team members and constantly refer to the given requirements.

Now, let’s study all the stages in which QAs are involved, their roles in those stages, and the business value their work brings.

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