Marketplaces
eBay uses a CS-Cart Multi-Vendor platform which is an E-commerce multi seller marketplace platform. eBay is known to have people sell consumer-to-consumer as well as business-to-consumer. More specifically, due to the huge number of sellers on the marketplace, eBay have decided to use open-source technology known as OpenStack through a cloud-based software which will allow eBay to track the high volume of deliveries, test and experimentation environment.