4. The particular person in charge of payment pays the invoice using bank card, paypal calculator fee or bank switch. 4 Airport Security Statement Credit. PCI means Payment Card Industry, which is a must-have for every e-commerce enterprise proprietor who offers with hundreds of orders and credit card transactions. If in case you have come to this article, you could also be an e-commerce enterprise owner or somebody who's thinking of starting an e-commerce website. With the evolving digital world and frequent use of superior technologies, it's excessive time for every e-commerce enterprise owner to offer attention to data safety to protect buyer information in this aggressive world. Event-Driven Architecture: Use occasion queues (like Kafka) to course of excessive volumes of data asynchronously.