Wondering how to allocate your budget to reach the most effective Facebook audiences? Facebook's Budget Optimization tool uses an algorithm to automatically optimize your budget distribution across ad sets. In this article, you'll discover what the Facebook Budget Optimization tool offers, how it works, and when you should use it. How to Use the Facebook Budget Optimization Tool for Improved Results by Meg Brunson on Social Media Examiner. As with most aspects of Facebook advertising, the most effective way to identify what's working best for your business is through testing.