How the concurrency mode is specified in WCF service?

Answer:

Hello,

The concurrency mode is specified using the ServiceBehavior attribute on the class that implements the service.
Ex.

[ServiceBehavior(ConcurrencyMode=ConcurrencyMode.Single)]
Public class ServiceClass : IServiceInterface{
//Implementation Code
}

There are 3 possible values of ConcurrencyMode enumeration
Single
Reentrant
Multiple

Thanks
Prasham