Advertisers have long been able to simulate the results of bid changes at the keyword and ad group level, and, now, they can do so at the campaign level, as well, Google has announced.
The change will allow advertisers to model changes even when there’s not enough data to do so at the keyword or ad group level. They can also see what would happen if they raised or lowered all of their bids within the campaign by a certain percentage — say, 5%. Advertisers can see what would result if you changed all campaign bids to the same fixed value.
If a change looks promising, the system will be able to say whether an advertiser would need to increase the campaign budget to avoid being limited at the new bid value.
There’s also the opportunity to download the bid simulation data at the account or campaign level, and users can also download an AdWords Editor-compatible file with bid amounts at the simulated level, along with the ad groups and keywords to which they should be applied.
Campaign bid simulator can be found in the Opportunities tab within the left navigation tree.