Hello Aviv,
In a VC environment, if all APs are in the same broadcast domain (layer 2) roaming will be seamless.
As of today, If some APs are behind a routed switch (layer 3 adoption) then roaming between APs on either side of the switch will 
not be seamless unless a fully fledged controller (NX/VX) is used. 
Regards,
Chris
					
				
			
			
				
	Christoph S.