What actually is QA?Quality Assurance is one of the key aspects of product development. Its purpose is to locate code issues and potential bugs, that may cause an incorrect work of the whole system, and also review the UX flow to ensure that site will provide the best possible experience for users.
What could these bugs be?
- Issues with automated transactions which in some cases cause an unwanted delay.
- When a user signs up, an email confirmation mail is not sent to his email.
- A security gap during the sign-in process which might lead to losing control over your profile whilst you are the only person who has access credentials.
Knight’s $440 Million Error
One of the largest U.S. stock trading companies, Knight Capital, lost about $7 billion in the first hour of trading alone, buying up 150 different stocks. The new trading software contained a flaw and executed trades unintentionally. This only became apparent after the software was activated. Two days later, the company's stocks lost 75% of their value. Eventually, Knight Capital Group Holdings was acquired by another competitor in the market in July 2017.
But why do these cases happen?This is because software consists of cycles, a sequence of transitions from one form to another. Each of these phases has its own objectives and results. QA engineers help define all requirements for the software, test it at every phase of the life cycle and provide final information about the quality of the product. Developers need to focus entirely on the software product to respect the given deadlines. Because of that, they can’t afford to waste time with testing or analyzing small bits of code. If there is no QA in the team, some defects may go undetected and will be discovered by a real user only after the official launch. The following range of metrics on the project performance is directly correlated with maintenance of QA-testing.
- Ensuring customer satisfaction
- Development cost
- Simplify the development process
- Building reputation