I am a novice in WCF and SOA. I am just starting out on these, I have a theoretical doubt:
Client A has called a service and the logic is currently executing on the se
There are settings for both instancing and concurrency, see http://msdn.microsoft.com/en-us/library/ms731193.aspx for details.
Running your WCF service in IIS takes care of some of the concurrency issues.