DELF Pro is an official diploma offered by the French Ministry of Education.
DELF Pro comes in 4 levels corresponding to the 4 levels of the CEFR
(Common European Framework of Reference for Languages): A1, A2, B1 and B2.
It is indicative of French proficiency level in a professional working environment.

DELF Pro diplomas (Diplôme d’Etudes en Langue Française Professionelle) have a lifetime validity; they do not expire.