Equivalent to Simple Camera Controller

Unity Engine
2

You can create new action map with say movement action with its respective bindings. Then reference those maps and use the events to do something in your case moving the camera.
something like this-

5861737--623176--upload_2020-5-17_20-18-1.png
5861737--623176--upload_2020-5-17_20-18-1.png878×178 16.5 KB

Make sure to create script when you create new Input Action.
and then to use these bindings

public class SomeController : MonoBehaviour 
{
    Controls controls;
    Private void OnEnable() => controls.Enable();
    Private void OnEnable() => controls.Disable();
    void Awake() {
        controls.Player.Move.performed += ctx => MoveCamera(ctx.ReadValue<Vector2>());
    }
    void MoveCamera(Vector2 value) {
        //some movement logic
    }
}

Since you have controller script you can change the inputs in it. or you can check out this video or checkout this thread.