Virtual Instructor Led Training: external provider

Summary

Does OLC integrate only with Webex in terms of virtual classroom?

Content

Hi,

I know that OLC integrates with Webex Center and Webex Training Center, but is there or will there soon the possibility of using another external providers? 

For example, if I wanted to use GoToWebinar, I have to use the link? Isn't there a way to integrate it?

Thanks in advance

Federica