InterWiki

InterWiki is the idea of having one unified Wiki system distributed across many servers. Although the work would be distributed across many servers, to the user the transition between server to server would be apparently seamless: You might not even know that different pages are being handled by different machines on different continents. The main advantage of such an idea is that the Wiki could grow -- both in topic coverage and in traffic -- without any of the machines getting overloaded. (Source: MeatBall:InterWiki)    (AD0)

- from the original definition on Wiki:InterWiki    (AD1)