--- title: "Multiple impression URLs in VAST/DAAST... which should I fire?" slug: "multiple-impression-urls-in-vastdaast-which-should-i-fire" updated: 2025-07-02T19:30:54Z published: 2025-07-02T19:30:54Z canonical: "help.tritondigital.com/multiple-impression-urls-in-vastdaast-which-should-i-fire" --- > ## Documentation Index > Fetch the complete documentation index at: https://help.tritondigital.com/llms.txt > Use this file to discover all available pages before exploring further. # Multiple impression URLs in VAST/DAAST... which should I fire? You should fire *all* impression URLs individually.