What is the difference between Javascript and Server-to-Server?

Javascript uses local storage to track the click and uses the script to record the transaction and send data back to FuseTwo. Server-to-Server (postback URL) can be mapped and set up on your internal system.

Which option should I be using?

This is entirely up to you. We offer a variety of tracking plugin options and your team will be able to determine the best format for tracking. The most important factor is that the tracking method works consistently (lapses in tracking can damage your relationships with publishers).

How do I find which variables to use for the parameters?

Each webhost will have its own set of variables that are applicable to the values needed in your FuseTwo tracking. Please check your tech support resources internally for this information.