Salesforce B2B Commerce for Developers Accredited Professional (AP-202) Exam - Topic 3 Question 89 Discussion

Two different types of services that Salesforce B2B Commerce APIs leverage are:

Logic services which are responsible for implementing business logic associated with entities. These services are defined in the logic classes, such as ccrz.ccLogicCart, ccrz.ccLogicOrder, or ccrz.ccLogicProduct. These classes provide methods for validating inputs, performing calculations, applying rules, or updating data for each entity.

Data services which are responsible for querying and transforming data from entities. These services are defined in the service classes, such as ccrz.ccServiceCart, ccrz.ccServiceOrder, or ccrz.ccServiceProduct. These classes provide methods for creating, reading, updating, and deleting data for each entity. Salesforce Reference:B2B Commerce and D2C Commerce Developer Guide,Service Classes,Logic Classes