UFE is a standalone FIX gateway that can speak any FIX variant (you control this by compiling your own XML schemas using Fix8Pro), handle multiple sessions reliably and robustly as well as delivering high performance. Downstream systems connect via ZeroMQ. FIX sessions can accept requests from downstream clients (REQ/REP) and can broadcast to downstream subscribers (PUB/SUB). We often refer to UFE as the UFEGW or UFE Gateway.