Prompt Engineering is the art of crafting effective prompts for large language models (LLMs) like ChatGPT to generate desired outputs such as text, images, or code. It involves using a combination of instructions, questions, input data, and examples in the prompt. There are various flavors of prompt engineering, including instruction prompting, persona pattern prompting, chain-of-thought prompting, self-consistency decoding, and prompting for image generation. By carefully crafting prompts, users can significantly improve the quality of AI-generated outputs.