There are several ways we could go about answering this question. Our engineering team could probably write a whole book to explain cloud load testing on a very technical level. On another level, I wanted to explain it using a single graphic.

LoadStorm can be explained in 5 simple steps:
1. A tester builds scenarios (also call scripts or playbacks)
2. The LoadStorm controller activates load generation servers
3. Virtual users storm the target application and follow the actions laid out in the scenarios
4. LoadStorm measures the responses of the application (such as response times, errors, and throughput)
5. These responses are summarized in various reports for the tester to analyze.

Here is the infographic summarizing the LoadStorm load testing cycle:

How LoadStorm Works Infographic