gs.print() and gs.log() are older and not available in scoped applications, whereas gs.debug(), gs.info(), gs.
warn(), gs.error() work in both scoped applications and global are therefore are more versatile going forward in future versions.
Reference: https://community.servicenow.com/community? id=community_QUESTION NO:
&sys_id=bd71cb29db98dbc01dcaf3231f9619c6

An example of when an application might not use a Scheduled Script Execution (Scheduled Job) is when the application needs to run a client-side script at the same time every day. A Scheduled Script Execution is a server-side script that runs on a specified schedule and performs some action on the server or database. A client-side script runs on the user's browser and cannot be scheduled by ServiceNow. The other options are examples of when an application might use a Scheduled Script Execution, such as sending email reminders, running a clean up script, or querying the database for unassigned records. Reference: Scheduled Script Execution, Client scripts

In ServiceNow, when configuring a REST Message, the Endpoint specifies the URI (Uniform Resource Identifier) where the REST request is sent. This URI points to the resource on the external system that the REST message will interact with, whether it's to retrieve, update, create, or delete data.
Key Points:
Endpoint Definition: The Endpoint is a complete URL that includes the protocol (e.g., HTTP or HTTPS), the domain or IP address of the external server, and the specific path to the resource. For example: https://api.example.com/v1/resources.
Dynamic Endpoints: ServiceNow allows the use of variables within the Endpoint URL, enabling dynamic substitution at runtime. This is useful when the exact resource path or parameters need to be determined during execution.
Configuration in ServiceNow:
Navigate to "System Web Services" > "Outbound" > "REST Message."
Create a new REST Message or select an existing one.
In the REST Message record, define the Endpoint URL in the "Endpoint" field.
Example Scenario:
If you are integrating ServiceNow with an external ticketing system to retrieve incident data, the Endpoint might be something like https://api.ticketingsystem.com/incidents/{incident_id}, where {incident_id} is a placeholder that gets replaced with the actual incident ID at runtime.