Why Performance Testing is Required ?

Performance testing is done to measure speed, stability and scalability of an application. More importantly, performance testing tells us what needs to be improved before the product goes to market. Without performance testing, software more prone to issues such as: slowness in the application while several users use it simultaneously, poor usability, stability of the application. Performance testing will determine whether or not the software meets speed, scalability and stability requirements under expected workloads. Applications sent to market with poor performance metrics due to non existent or poor performance testing are likely to gain a bad reputation and fail to meet expected sales goals.

We should not limit our self to performance testing of newly created application. Ideally we should conduct performance testing of each and every application regardless of that if it is newly created, created before or it is off the shelf product of other company.