IIS

IIS still hasn't retired. These days I have three main places to host applications: IIS, Docker and cloud Kubernetes. On Windows servers, IIS is home to both classic apps and YARP — so the skill I built back in the SharePoint era keeps paying the bills.

IIS is Microsoft's web server, home to all ASP.NET applications and SharePoint farms. I start working with it closely: configuring application pools, bindings, SSL, logs. Together with SharePoint I'm learning it as an infrastructure tool — without understanding IIS, no SharePoint debugging is possible at all.