This document is a guide on Ad Quality Defense, a solution designed for publishers to proactively manage and enhance the quality of digital ads before they enter the bidding stage. The guide outlines how Ad Quality Defense enables publishers to set custom standards to protect their ad inventory from low-quality and non-compliant ads, thereby maintaining a pristine ad environment. It details the key capabilities of the solution, including the integration process via a JavaScript tag, the implementation of a header bidder filter, and the ability to filter and block creatives that violate established quality standards. The document also emphasizes the importance of visibility into ad quality violations and the enforcement of personalized standards across partner platforms. Additionally, it highlights the advanced scanning capabilities that ensure adherence to quality standards, ultimately safeguarding the publisher's reputation and business relationships in the digital advertising landscape.