A developer has aspecification to integrate with a REST API for retrieving traffic conditions.

For integrating with a REST API where the parameters are expected to be form-encoded, the service type to be registered in Salesforce B2C Commerce Cloud should be a "POST Form." This service type configures the service framework to encode the parameters as application/x-www-form-urlencoded, which is the correct content type for form-encoded data. This setting is crucial for ensuring that the API receives the data in the expected format and can parse it correctly.