What is web garden in IIS ?

Web garden means the multiple worker process for the specific application. You could enable it in application pool->advanced setting->maximum worker processes. We know that route all the requests in the same worker process could increase the burden of your GC and it will effect the performance of your web application. So when you enable the web garden, the IIS will send the requests to different worker processes. It is equal to a worker process load balance function which would average the load for the worker process. What's more, it save the physical space and could be controlled by processer affinity. However, if you need failover cluster, you should use web farm. https://www.c-sharpcorner.com/uploadfile/nipuntomar/web-farm-and-web-garden/ https://www.dotnettricks.com/learn/iis/web-garden-and-web-farm https://social.technet.microsoft.com/wiki/contents/articles/33647.web-gardening-in-iis-7-configure-step-by-step.aspx