method name

[roadvin]

i dont know what this is call so someone know what they doing maybe can answer me. server can be access worldwide but if too many access it at once it will be slow. i saw some site like www1,www2, and www3. those are 4 different servers located in the same data center. some how they are connected in some way. some like main traffic goes to N america, www1 goes to europe , www2 asia , and www3 australia. does any one knows what this is call?

[lemon-tree]

Geographic Load Balancing