https://en.wikipedia.org/wiki/Thin_client
If you don't tell us anything about it, it won't get much better than this. And you are referring to a client's documentation, which means it is something custom for the client. We don't know what kind of integration it is and what is integrated, so we can only tell you what a simple google search for 'what is thinclient' tells us.
Please mark any helpful or correct solutions as such. That helps others find their solutions.
Mark
