The logical organization of information within a prompt or response.
Structure is the framework that holds prompt information together in a usable order. It affects how clearly the model can separate instructions, context, examples, and expected output.
Well-structured prompts reduce confusion because each part has a clear role. They are easier to maintain, easier to debug, and often more reliable in production settings.
Structure also matters in outputs. When a response follows a clear structure, humans can read it faster and downstream systems can process it more predictably.