Worker Process:

• Worker Process (w3wp.exe) runs the ASP.Net application in IIS.
• This process is responsible to manage all the request and response that are coming from client system.
• All the ASP.Net functionality runs under the scope of worker process.
• When a request comes to the server from a client worker process is responsible to generate the request and response.
• In a single word we can say worker process is the heart of ASP.NET Web Application which runs on IIS.