what is a power band on a 2 stroke

I'm curious about the concept of a "power band" in a 2-stroke engine. I’ve heard it mentioned quite a bit, especially when talking about performance and tuning, but I’m not exactly sure what it refers to. Could someone explain what the power band is, how it affects the engine’s performance, and what role it plays in the overall ride experience? Are there any tips for optimizing or tuning the power band on a 2-stroke engine? Appreciate any insights!