A health company must automatically identify and redact phone numbers and patient names from transcripts before sharing them externally. Which Azure AI Language capability does this?
A.Key phrase extraction
Key phrases are topics — not sensitive-data discovery.
B.Personally identifiable information (PII) detection
PII detection + redaction = the exact feature. Correct.
C.Entity linking
Linking resolves entities to references — not redaction.
D.Custom text classification
Custom classification assigns document labels — not field redaction.
Why this answer
PII detection identifies sensitive entities (names, phone numbers, SSNs, addresses) in text or transcripts and can redact them — the compliance-critical NLP feature. Entity linking maps entities to known references but isn't focused on sensitivity/redaction.
Correct answer: B · Last reviewed 2026-02-14
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