This document discusses using a single ad group and campaign for an entire PPC account. It recommends using ad customizers to manage ad copy at the keyword and location level to deliver relevant ads. Setting URLs at the keyword level or dynamically inserting keywords into site searches allows ads to be tailored for each keyword. Using this approach can save thousands of hours managing ads while improving click-through rates, conversions, and quality scores. The document provides an example of an ad customizer sheet for managing ad copy and constructing ads from customizable fields. It encourages contacting the agency to discuss implementing this single ad group approach to improve PPC performance.