Let’s explain in technical terms, QA & Testing services is an investigation that is carried out to provide the company with the appropriate information on the quality of the product which is subjected to test. If a problem is found it is reported to the developing department and thus changes can be made in the coding or whatsoever at that very mid stage of development. Therefore it is extremely beneficial.
The aim of software testing services is to find the software bugs and failures in order to find the defects and correct them. It is a completely wrong notion that testing can detect if software can work optimally under any given conditions. Testing only clarifies if the software can work properly under specific given conditions.