What type of data can both Web Services and REST APIs expose?

Web Services and REST APIs in Salesforce are designed to facilitate integration, allowing external systems to interact with Salesforce data. Both technologies can expose a wide range of data types, encompassing both standard and custom objects.

Standard objects are those predefined by Salesforce, such as Accounts, Contacts, and Opportunities, which are integral to the Salesforce ecosystem. Custom objects, on the other hand, are user-defined objects created to capture specific data unique to an organization's requirements.

By supporting both standard and custom objects, Salesforce provides a versatile platform for organizations to retrieve, manipulate, and utilize data based on distinct business processes. This capability is crucial for seamless data integration, enabling external applications to access and manage a comprehensive set of Salesforce data, regardless of its origin. Thus, the inclusion of both standard and custom objects in the API responses significantly enhances integration possibilities and flexibility.