You fill-in in a bank transfer form and mail it to your bank (if you don't carry it in person to a branch office). The money gets transferred from the account of the receiver to the account of the recipient within a day. That's a standardized service every bank has to offer in the SEPA area and the price must be same regardless where the recipient's account is. No difference whether business or individual on either end. You need to know the recipient's account number (IBAN). Of course banks prefer that customers use the internet to initiate such transfer, but other methods exist (often at a higher price).