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What are sub-domains?

Sub­do­mains are a way to cre­ate dif­fer­ent web address­es for spe­cif­ic parts of a web­site. They are often used for orga­ni­za­tion­al or nav­i­ga­tion pur­pos­es, as well as for cre­at­ing unique land­ing pages or microsites. Sub­do­mains are cre­at­ed by adding a pre­fix to the main domain name, sep­a­rat­ed by a dot.

For exam­ple, blog.example.de is a sub­do­main of the main domain example.de. They can be use­ful for man­ag­ing large web­sites with mul­ti­ple domains or for tar­get­ed mar­ket­ing cam­paigns. It is impor­tant to know that sub­do­mains are not the same as sub­di­rec­to­ries or sub­fold­ers, which are cre­at­ed by adding a suf­fix after a slash to the main domain name.