If you mean SEPA instant credit transfers I think they are available only in some countries and they are not free in my experience.
This rule is new though, it went into effect in December: https://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELE...
> Charges levied by a payment service provider on a payment service user in respect of cross-border payments in euro shall be the same as the charges levied by that payment service provider for corresponding national payments of the same value in the national currency of the Member State in which the payment service provider of the payment service user is located.
It's extremely convenient to be able to pay anyone any amount at any time with nothing more than your phone.