Although E-Order has full access to Paas capabilities and on-sale capabilities, its core capabilities are still in the mall model, including homepage cards, product list/details, shopping carts, and ordering pages. This is a relatively fixed mall order process. The operation does not currently support custom functions and ui events. But the form mode (new order like crm) is supported, and other open custom custom objects are also supported by default.
For the summary of frequently asked questions about E-Order, please click the link: Common Questions about E-Order