1. Google Search provides advertisers access to a massive amount of demand from its over 450 billion queries per year from all devices. 2. Google uses signals like location, device, time of day, and demographic data to better understand users' context beyond just their search query to help advertisers target ads. 3. Advertisers can optimize their campaigns and bidding on Google Search by making adjustments for location, device type, and audience to reach the right customers at the right time across different formats like Dynamic Search Ads, Product Listing Ads, and video extensions.