DSP provides 3rd party tag which join user into interest group via Protected Audience API.
3rd party script provided by ssp should embed as below.
        <script
            src="https://privacy-sandcastle-dev-dsp.web.app:443/js/dsp/dsp-tag.js"
            class="dsp_tag"
            data-advertiser="privacy-sandcastle-dev-shop.web.app"
            data-id="1f45e"
            data-script="afterInteractive">
        </script>
    
  SSP provides 3rd party tag which running auction via Protected Audience API and decide which Ads to display.
Ads will embed inside <fencedframe> like below.
3rd party script provided by ssp should embed as below.
      <ins class="ads">
        <script
          class="ssp_tag"
          src="https://privacy-sandcastle-dev-dsp.web.app/ad-tag.js">
        </script>
      </ins>