☛ Load Testing: Testing an application under heavy but expected load is known as Load Testing. Here, the load refers to the large volume of users, messages, requests, data, etc.

☛ Stress Testing: When the load placed on the system is raised or accelerated beyond the normal range then it is known as Stress Testing.

☛ Volume Testing: The process of checking the system, whether the system can handle the required amounts of data, user requests, etc. is known as Volume Testing.