In this article you will learn how to debug any web application that is hosted on IIS by attaching worker process of that application to Visual Studio. Also, you will learn about various authentication mode in IIS.
By default, each application pool runs with a single worker process (W3Wp.exe). When an application pool runs with multiple worker process, it is called web garden.
When a web application is hosted on multiple web servers and access based on the load on servers, it is called Web Farm.
IIS has two main layers - Kernel Mode and User Mode. The Kernel Mode contains the HTTP.SYS and User Mode contains WAS and W3 service. The subsection of both are shown in fig.
An Internet Information Services (IIS) application pool is a set of URLs that is routed to one or more worker processes. Application pools responsible for to isolate one or more applications into their own process. For example you have two different website like website-A and website-B and want to deploy on same server, then application pool isolate your website means website-A run on one
IIS stands for Internet Information Service. IIS is a web server developed by Microsoft and used to host the Web application. It has its own ASP.NET Process Engine to handle the request. So, when a request comes from client to server, IIS takes that request and process it and send response back to clients.