Select the best definition of a service connector.

The best definition of a service connector is that it defines the interaction between a Process Designer and a service. A service connector acts as a bridge, enabling communication and data exchange between different applications or services within a data integration process. This is critical in environments where various systems need to work together seamlessly, as it outlines the specific way in which the components interact during the execution of a data integration task.

In the context of Informatica and cloud data integration, this interaction is vital for orchestrating data flows, ensuring that data is moved efficiently from one service to another. The Process Designer utilizes service connectors to establish how the data will be processed and transferred, making it a fundamental component in designing automated workflows in cloud integration tasks.

The other choices do not capture the full functionality of a service connector. Holding connection details might relate to aspects of service connectivity, but it does not encompass the broader role of facilitating interaction between processes and services as defined in the correct answer. The notion that it is a built-in connector for a specific application like Salesforce is too narrow and does not represent the versatility of service connectors. Lastly, describing it as an interface for manual data entry misrepresents its purpose, as service connectors are primarily focused on service interactions rather than manual data handling.