The present page serves as an overview for the topic. All available documents for the topic can be found here.
Generally, web services are web-based applications that dynamically interact with other web applications using open standards without any user interaction.
Intershop Commerce Management provides access to resources and functionality using web services in addition to the browser-based Commerce Management application and storefront interfaces.
Using web services, developers can make well-defined business processes or data accessible to any internal or external web service client. Organizations can communicate data without knowledge of each other's IT-systems behind the firewall. For example, one company can call another service to calculate the shipping costs for a package of a certain weight or size.
This enhances the modularity of the system, and enables the re-use of functionality.