Web Farms vs Web Gardens

A friend of mine asked me this question today so I thought I would post the response on the guild in case others were wondering.

Web gardens are different from Web farms. A Web garden is configured on a single server by specifying multiple worker processes for an application pool. Web farms use multiple servers for a Web site.

http://www.microsoft.com/technet/prodtechnol/WindowsServer2003/Library/IIS/659f2e2c-a58b-4770-833b-df96cabe569e.mspx?mfr=true