AI-102 Implement computer vision solutions Practice Question
A company wants to extract key-value pairs from scanned invoices using Azure AI. Which service should they use?
⚠ Common exam trap
Watch out — candidates often confuse the Read API or OCR API with Document Intelligence because all three involve text extraction, but only Document Intelligence provides key-value pair extraction and document understanding capabilities.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure AI Document Intelligence
Azure AI Document Intelligence (formerly Form Recognizer) is the correct choice because it is specifically designed to extract key-value pairs, tables, and structured data from scanned documents like invoices. Unlike the Read API or OCR API, which only return raw text or OCR output, Document Intelligence uses prebuilt models (e.g., 'prebuilt-invoice') that understand the semantic layout of invoices, enabling direct extraction of fields such as invoice number, date, and total amount.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Read API
Why it's wrong here
Read API extracts text but does not parse key-value pairs.
- ✗
Custom Vision
Why it's wrong here
Custom Vision is for image classification and object detection.
- ✗
OCR API
Why it's wrong here
OCR extracts text but not the structural relationships.
- ✓
Azure AI Document Intelligence
Why this is correct
Document Intelligence uses prebuilt or custom models to extract key-value pairs.
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