導入全網站標記的必備條件是什麼？

The correct answer is ensuring the Google Click ID (GCLID) remains intact if you use a click tracker in your URLs. The GCLID is crucial for connecting ad clicks to conversions and other website activity, especially when using Google Ads auto-tagging. If a click tracker modifies the URL in a way that removes or alters the GCLID, Google Ads cannot attribute conversions correctly, breaking the full site tag's functionality. Using only the image portion of JavaScript is incorrect because full site tagging requires comprehensive JavaScript to track various interactions. Loading the full site tag within other tracking tags like Floodlight is unnecessary and can lead to conflicts or improper firing. Disabling auto-tagging for Google Ads accounts with full site tagging enabled is incorrect; auto-tagging is a complementary feature that helps ensure the GCLID is appended, which is vital for accurate tracking with the full site tag.