Redaction, anonymization, and pseudonymization are related but not interchangeable labels. For an LLM workflow, start by asking what data the model actually needs.
Redaction
mario.rossi@example.com
↓
[REDACTED]Placeholder replacement
mario.rossi@example.com
↓
{{EMAIL_1}}A reversible mapping is a separate design decision. Whether a transformation is legally considered anonymization or pseudonymization depends on the context and retained linkability.