What is Software Testing?

Software Testing is all the activities that are intended at discovering errors in a software product or its components in order to make sure that end-usage requirements of the customer are met.

• Process of execution of a program with the intend of finding errors.
• Process of exercising or evaluating the system component by manual or automated means to verify that it satisfies specified requirements. 

Testing is not only the process of executing a program with the intent of finding errors it is also the process of improving the quality of the application.  Software Testing is a process of evaluating that the Software performs the intended functions correctly.