What is the objective of Software Testing?

Software Testing essentially is to find out the possibility of occurrence of the following five issues:-

• The software under test doesn't do something that the product specification says it should do.
• The software under test does something that the product specification says it shouldn’t do.
• The software under test does something that the product specification does not mention.
• The software doesn't do something that the product specification doesn’t mention but should do.
• The software is difficult to understand, hard to use, slow, or – in user’s eye it is not just right.

So, software testing is not just executing test cases. It is about understanding the product and a constant strive to make it better and to provide stakeholders with information about the quality of the software, with respect to the context in which it is intended to operate.