Also called Portail Public de Facturation, annuaire
The Portail Public de Facturation is the French state infrastructure at the centre of the reform. Its role is the directory that says which accredited platform a given business receives invoices through, and the centralisation of tax data. It is not a free platform you can invoice through.
The original design had the PPF as a free public exchange platform, so a small business could comply without paying anyone. That role was dropped in 2024.
What remains is the annuaire, the central directory used to route an invoice to the recipient's platform, plus the concentration of tax data for the administration.
The practical consequence is the reason to know this: there is no free state route any more. Every business needs a commercial accredited platform.
The directory decides where an invoice goes. It does not check whether the invoice is well formed.