an application pool that is configured with more than one worker process
                                                            
                                                     
                        
                                                
                        
                        
                            an application pool that is serviced by more than one worker process simultaneously
                                                            
                                                     
                        
                                                
                        
                        
                            a process model responsible for 'distributing the work to several processes, one per CPU, each with processor affinity set to its CPU'
                                                            
                                                     
                        
                                                
                        
                        
                            a Web application distributed across more than one processor on a multiprocessor computer