A developer needs to create ascheduled job in an external system to move Order data...

Two ways that this off-platform job can be established without additional third-party tools are:

Install a minimal set of dev tools on a machine such as the Command Line Interface (CLI) and create appropriate scripts to import files containing the data. The CLI is a tool that allows developers to interact with Salesforce from the command line. The developer can use the CLI to create scripts that use commands such as force:data:bulk:upsert or force:data:tree:import to import data from CSV or JSON files into Salesforce.

Authorize a machine against the Salesforce org’s APIs with appropriate security measures and create a script to call the APIs. The APIs are interfaces that allow developers to access data and functionality in Salesforce from external systems. The developer can use the APIs, such as REST API or Bulk API, to create a script that authenticates with Salesforce using OAuth 2.0 or JWT, and then performs operations such asinsert, update, or delete on Order data.

Verified References: https://developer.salesforce.com/docs/atlas.en-us.sfdx_cli_reference.meta/sfdx_cli_reference/cli_reference_force_data.htm https://developer.salesforce.com/docs/atlas.en-us.api_rest.meta/api_rest/intro_what_is_rest_api.htm https://developer.salesforce.com/docs/atlas.en-us.api_asynch.meta/api_asynch/asynch_api_intro.htm