AdSense is a wonderful advertising concept that was conceived by Google some time back.
Though new advertising concepts keep coming up all the time, this one is something that is altogether different.
AdSense (Google's advertising program) presents an earning opportunity to the website owners by allowing Google to post advertisements on their websites.
These advertisements are either text advertisements or image based advertisements.
Of course, the website owners need to enroll to the AdSense program through Google's website (www.google.com/AdSense).
Google AdSense program requires you (the website owner) to include a piece of code (a programming script) on your website.
You can add this piece of code anywhere in the html code of your website i.e. depending on where you want to position the advertisements (however, there are certain rules that you must follow while pasting this scripting code).
For people who want to advertise their products and services through the Google AdSense system, it's just a matter of signing up through Google Adwords program and letting Google know how much they want to spend towards advertising through Google AdSense.
These businesses can specify the limit and Google AdSense system will accordingly serve their Ads so as to ensure that the specified limit is not crossed.
Google AdSense increases the visibility of their business/ services and also increases traffic to their website; hence fulfilling their purpose of advertising.