Hi Kevin,
> Is HAproxy able to load balance individual requests within a TCP session? If you're talking about HTTP, then yes, thats possibile. Individual requests may be served by different backends via content switching (if you want). It we talk about a proprietary application protocol based on TCP, its obvious all haproxy can do is load-balance the layer 4 payload as-is. Not sure if Lync uses HTTP. Regards, Lukas