1 Define web server, application server, Database server, query server, crawl server
1.1 Web server
This server (also known as a front-end Web server) hosts all Web pages, Web Parts, and Web services used when your server farm receives a request for processing.
Note: Web server or WFE contain “Microsoft SharePoint Foundation Web Application” service. Click to view detail, view more detail, and more.
1.2 Application...
