PERFORMANCE TESTING VS FUNCTIONAL TESTING
FUNCTIONAL TESTING EVALUATES INDIVIDUAL AND COHESIVE BEHAVIOUR FUNCTIONS OF A SOFTWARE SYSTEM TO VERIFY THAT THEY ADHERE TO PRE-DEFINED SPECIFICATIONS. IT TESTS THE FUNCTIONAL ACCURACY, INTEROPERABILITY OF SUBSYSTEMS AND COMPLIANCE WITH PRE-DEFINED STANDARDS IN THE CONTEXT OF FUNCTIONAL AND BUSINESS REQUIREMENTS.
PERFORMANCE TESTING IS A NON-FUNCTIONAL TESTING TECHNIQUE THAT EXERCISES A SYSTEM AND THEN, MEASURES, VALIDATES AND VERIFIES THE RESPONSE TIME, STABILITY, SCALABILITY, SPEED AND RELIABILITY OF THE SYSTEM IN PRODUCTION-LIKE ENVIRONMENT