Hi @AmyPe2,
Thank you for your question! Fusion does not have any native Advantage modules, however you can use HTTP modules to connect with almost any service.
https://experienceleague.adobe.com/en/docs/workfront/using/adobe-workfront-fusion/fusion-apps-and-mo...
I would start by requesting the necessary authentication credentials (session ID, token, API Key etc) and exploring Advantage's API documentation to see what is required to retrieve the information.
From there, you can use the native Workfront modules to establish the communication between the 2 systems.
https://experienceleague.adobe.com/en/docs/workfront/using/adobe-workfront-fusion/fusion-apps-and-mo...
If you need more guided support with building this custom scenario, you will want to reach out to your Account Executive, so they can assist you with getting some time scheduled with our Professional Services team. They can aid in scenario design, implementation, best practices and custom solutions.
Warm regards,