The word concurrency is often used to define workload for load testing, as in concurrent users. Too often, it's the only input defined. In reality, there are a number of factors that contribute to workload and affect concurrency, and they all contribute to your load testing abilities—and, ultimately, the performance of your product.

Software development has been moving toward progressively smaller and faster development cycles, and continuous integration and continuous deployment are compressing delivery times even further. But is this actually good for businesses or their users? Just because you can deploy to production quickly and frequently, should you?