Google has announced the AdWords Campaign Experiments, or ACE. This tool helps you to optimize your AdWords account by letting you accurately test and measure changes to your keywords, bids, ad groups and placements.  As part of our ongoing effort to improve the AdWords experience, Google is this new tool and inviting advertisers to participate in the beta programme.

AdWords Campaign Experiments is a tool that allows you to accurately test and measure changes to your keywords, bids, ad groups and placements.

Today, the most common way to measure the impact of these types of changes is to do a simple before-and-after analysis. However, this type of analysis can often be complicated by events that occur during or between the before and after, including holidays, weekends or changes to end user behavior or advertiser behavior.

Different ways of using ACE
Use ACE to experiment with any combination of bid, keyword, ad group or placement changes. You can test and measure a variety of scenarios including:

• The incremental impact of adding new keywords to your campaign or changing keyword and ad group-level bids
• The value of restructuring your Content campaigns to use more tightly themed ad groups
• The change in volume by using different keyword match types
• The value of using an ad group default bid versus keyword-level bids
• And much more!

Visit this page if you want to apply to take part in this beta program.