Binding information determines how a service connects to and interacts with an application. Specifically, bindings are the protocols and transports assigned to imports and exports.
Your applications connect to services through a binding. Bindings are a critical part of your import and export components.
Bindings determine specifically how your import and export components interact with clients outside the module which contains the import and export components.
The bindings specify the message format and protocol details for a particular interface.