GPT-samples-lazy-loading Ad Manager docs
Lazy loading enables pages to load faster, reduces resource consumption and contention, and improves viewability rate by pausing the requesting and rendering of ads until they approach the user's viewport. With lazy loading in SRA, when the first ad slot comes within the viewport specified by the fetchMarginPercent property, the call for that ad and all other ad slots is made. [[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["To
2,284 characters of text.