Later during the 80's, the personal computer soared allowing employees to run most of their programs on their personal machines while critical operations could still be run at the mainframe or server level. Moore's law, the doubling of transistors on an integrated circuit every two years, explains how it has been possible to concentrate all this computing power on a small hardware in just a few years of time.
Now, we assist to a kind of return to the mainframe architecture : browsers, Internet and data-centers. Browsers are the access point. Data-centers are the computing power. And Internet is the network between the first two. This model is called the Cloud Computing.
Google AdWords and Cloud Computing :
Google AdWords is a perfect example of cloud computing. You log into your Google AdWords account through your favourite web-browser (Firefox, Chrome, Opera, Safari, Internet Explorer) which is connected to Internet. No application is running on your own computer and you do not have to install any software.
AdWords is actually running on Google' servers located in some data-center around the world. Then, you will create your advertising campaigns, define your settings, enter the keywords that are relevant to your business, edit creatives (i.e. Text Ads) that will be triggered when these selected keywords are searched and set your bids. Everything you have done will be saved on Google computers (ie. servers). Even if your computer is stolen or if you want to access your AdWords account from another computer once back home, you can do it. You just need an internet connection and a web-browser. Actually we can say that all the information is stored in the cloud.
On the other hand, when someone is doing a search on Google, Google computers will look every single time for all the AdWords advertisers which want to be shown on that query. Once a set of ads (one per advertisers*
Finally, if someone clicks on your ad you will be charged. No charge to be shown (impression)
Source: Semetis, Search & Web Analytics Agency
