1.3. The Input-Output Framework

💡 First Principle: Every AI service transforms a specific INPUT type into a specific OUTPUT type. Knowing the input-output signature lets you instantly identify which service to use.

This is the most important decision framework for the exam. When faced with a scenario question, always start by asking: "What is the input?" The following decision tree will guide you to the correct service family.

⚠️ Exam Trap: OCR is Computer Vision, not Language—the input is an image (pixels), even though the output is text.