what is adwords ? what is adwords scope ?

AdWords : Is an advertising service by Google for businesses wanting to display ads on Google and its advertising network. The AdWords program enables businesses to set a budget for advertising and only pay when people click the ads. The ad service is largely focused on keywords.

Now offline advertising is getting outdated. As everything converting to digital, advertising have trending field. Online advertisement provide way to check the efficiency of the campaigns and have the chance to do course correction so naturally Online advertising will gain momentum.