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There are many programs in the public domain to add advertisement servers to your website. However a thing of the past is installing them yourself, creating a database adding everything you need and more. If you get the right hosting company, such as godaddy hosting, you will have the ability to add applications such as an advertisement server with the click of a button.

However you do not always have to use a Web host, and you do not always have to install a program yourself or a program at all. You could use an aggregator, Some of the aggregators are popular are Rubicon Project, pubmatic, and others.  then there are advertising networks where you would simply paste their code but you only receive ads from them, such as value click or Casale media.  The benefit of an aggregator is that you can receive ads from all of the advertising networks show the ads that are the best for your site.