A shipping method is a way for a customer to select a shipping service that they would like to use to deliver their order. Shipping methods are created under the Settings-area - and once a method is created, it will be available for selection in frontend during checkout, a process handled by the shopping cart app.
To actually handle shipping, DynamicWeb allows you to integrate with a number og external delivery services:
In contrast with payment, for shipping you can also create shipping methods with no external delivery service. In that case you should use the Fees-tab on the shipping method to implement your own shipping fees.
Shipping templates
When you create shipping methods using an external service, the provider will ask you for templates which handle e.g. making package shops available for selection, posting information to the delivery service, showing errors to the user, etc.
The providers expect these templates to be located in folders under Files/Templates/eCom7/ShippingProvider. See the documentation for each shipping provider for details.