Verbraucherdienst e.V.: Über die Platinum Card Services Ltd. und „sofort.credit“
Credit Card As A Service - Innovation
Alex Xu on Twitter: "/1 Why is the credit card called “𝐭𝐡𝐞 𝐦𝐨𝐬𝐭 𝐩𝐫𝐨𝐟𝐢𝐭𝐚𝐛𝐥𝐞 product in banks”? How does VISA/Mastercard make money? The diagram below shows the economics of the credit card