Google has invented a method of selecting the ad delivery method under the campaign settings for its users. Users can select an accelerated or standard delivery options.
Standard Delivery method lets advertisers use their ad (that is, spreading ad impressions) at the preferred time of the day (or night). In the process, the advertisers do not cough up their entire budget in the morning itself, for example.
The accelerated ad delivery option, on the contrary, does not hold one back. Under this model, it just continues to display advertiser’s ad until the budget is not all exhausted.
Read