software testing

• Software testing is the process of evaluation a software item to detect differences between given

  input and expected output.
• Verification is the process to make sure the product satisfies the conditions imposed at the start

  of the development phase. In other words, to make sure the product behaves the way we want it

  to.
• Validation is the process to make sure the product satisfies the specified requirements at the end

  of the development phase. In other words, to make sure the product is built as per customer

  requirements.
• Integration testing is a systematic technique for constructing the software architecture while at

  the same time conducting tests to uncover errors associated with interfacing.
• Regression testing may be conducted manually, by executing a subset of all test cases or using

  automated capture/playback tools.