"The relationship with eBay is transformative for us because eBay’s developing powerful new APIs that make it far more efficient and effective for us to integrate our platform with eBay. We’re looking to continue to make this the best integration between an online store platform and eBay anywhere in the world. Because eBay’s APIs are so modern and so easy to work with, it will be very easy and fast for us to add features, fix bugs, expand the footprint that we have globally with eBay and adopt new features and capabilities as eBay releases them."
"Moving to eBay’s new Sell API enables us to work with JSON instead of XML / SOAP, and the team at eBay has been extremely helpful when we encounter any issue at all."
BigCommerce uses eBay's Account, Inventory and Fulfillment APIs