Which type of script is ideal for creating backend services without requiring authentication?

The ideal type of script for creating backend services without requiring authentication in the context of NetSuite is a Suitelet script. Suitelets are server-side scripts that allow developers to create custom user interfaces (UI) and extend the functionality of NetSuite applications. They can be designed to handle requests and respond with HTML and data, making them versatile for various use cases, including serving as backend services.

One key aspect of Suitelet scripts is that they can be accessed via a URL without requiring a user to be logged into the NetSuite interface. This capability allows for greater flexibility when needed in scenarios where backend services need to be available to external or automated systems without the overhead of user authentication. This makes them suitable for integrations or applications that require data processing or interaction with external systems.

In contrast, RESTlets are designed for RESTful services and typically require some form of authentication or user context, making them less ideal for scenarios that require unauthenticated access. Workflow action scripts are triggered as part of a workflow process and operate within the context of that workflow, necessitating user authentication. Scheduled scripts run on a schedule but do not inherently provide interfaces for access by external systems without some form of configuration that could involve authentication.

Overall, Suitelet scripts offer the best fit