Anonymisation/pseudonymisation

Pseudonymisation and anonymisation are distinct concepts. Pseudonymisation is a safeguard that reduces the linkability of data to a specific individual, but without aiming at completely cutting that link, while anonymisation makes data unlinkable to any individual. Truly anonymised data is no longer considered personal data, thus falling outside the scope of EU data protection law.
The EDPB issues guidance on these methods to clarify this difference, and support compliance with the related data protection requirements.