An other distinction is, that you might charge accounts of normal customers, but you always just send an invoice to an enterprise customer, and they send you the money. German customers could use the old BLZ routing, European the IBAN routing, and US will use ACH. But I don't care, as long as I get my money on my account. Big companies are slow payers. My trick of getting the money fast is to offer 2% discount, if they pay within 7 days.