The level of automation at any fab depends on several factors, but primarily the volume in wafer starts or outs, age of equipment, complexity of process, etc. The other main aspect to fab automation lies with the kind of experience and technological maturity of the manufacturer. Setups with longer exposure to IC manufacturing and skilled manpower are more prepared and adaptable to integrate automation solutions within their fabs and various production sites. This may include systems for Automated Material Handling, Planning , Simulation, Manufacturing Execution Systems, which include production dispatching and scheduling system and also Advanced Process Control systems and so on.