...
External websites can access the system to get information such as item descriptions, pricing, available stock, images etc. and pass information back to the system to get customer specific pricing or pass shopping cart items to check quantities as the order is assembled. Finished orders can be submitted to the system. Any information in the system can be provided to external websites securely - for example "where is my nearest retailer" that checks to see retailers near a postcode who have ordered a product in the last 10 days.
A Web Sales Order for consumers tends to be smaller orders you might want to group together using the Web Order Dashboard for picking using Pick Imploded Orders Batch