Performance testing is often mistaken for performance tuning. The two are related, but they are certainly not the same thing. To see what these differences are, let’s look at a quick analogy.
Most governments mandate that you bring your vehicles to the workshop for an inspection once a year. This is to ensure that your car meets the minimum safety standards that have been set to ensure it is safe for road use.
A website performance test can be likened to a yearly inspection — It ensures that your website isn’t performing terribly and should perform reasonably well under most circumstances.