Location targeting is not decided by machine learning. Machine learning will choose an ad schedule for campaigns without her input. Machine learning will choose the keywords used to serve her ads to users. Machine learning helps her set the appropriate bid for each and every auction. Download Google Ads Search Certification Exam Answers (PDF)
It’s better because the correct bid can often be a hard-to-reach static target. It’s better because user intent and the likelihood to complete valuable actions for your business don’t change according to location, time, or device. It’s better because the increasing complexity of the customer journey necessitates that bids be based on general user behavior. […]