Google Ad Manager

Ad request arrives for: homepage leaderboard (728x90), US, logged-in user

Eligible line items evaluated in order:

1. Sponsorship — "ACME Brand Takeover" (priority 4)
   → Targeting: homepage + US ✓  |  Frequency: 3/day  |  User has seen 3 today
   → SKIPPED — frequency cap reached

2. Standard — "Winter Campaign 2024" (priority 8)
   → Targeting: article pages only ✗
   → SKIPPED — targeting does not match

3. Price Priority — Prebid HB line items (priority 12)
   → hb_pb=3.50 targets "3.50" key-value — line item CPM $3.50 ✓
   → hb_pb=4.20 targets "4.20" key-value — line item CPM $4.20 ✓
   → Both eligible — GAM selects highest CPM among Price Priority

4. Open Auction — DV360 programmatic (priority 12, competes by CPM)
   → DV360 returns $3.80 CPM in unified auction

Final decision: Prebid $4.20 wins over DV360 $3.80 and Prebid $3.50
Prebid creative renders. Win notice fires to AppNexus.
GAM records impression against that Price Priority line item.

// After pbjs.setTargetingForGPTAsync() fires, each GPT slot gets these key-values:

googletag.pubads().getSlots().forEach(slot => {
  console.log(slot.getTargetingMap());
});

// Example output for the winning bid from AppNexus at $3.50 CPM:
{
  "hb_pb": ["3.50"],            // Price bucket — must match GAM Price Priority line item CPM
  "hb_bidder": ["appnexus"],    // Winning adapter name — used for per-bidder line items
  "hb_adid": ["abc123def456"],  // Bid ID — Prebid uses this to look up and render the correct creative
  "hb_size": ["300x250"],       // Creative size — for targeting size-specific line items
  "hb_source": ["client"]       // 'client' = Prebid.js; 'server' = Prebid Server
}

// With enableSendAllBids: true, all bidders write keys (not just the winner):
{
  "hb_pb_appnexus": ["3.50"],
  "hb_pb_rubicon": ["2.80"],
  "hb_pb_pubmatic": ["3.10"],
  ...
}

<script>
  // Paste this into the GAM creative "Third party" creative type
  var w = window;
  for (var i = 0; i < 10; i++) {
    w = w.parent;
    if (w.pbjs) {
      try {
        w.pbjs.renderAd(document, '%%PATTERN:hb_adid%%');
        // %%PATTERN:hb_adid%% is replaced by GAM with the actual hb_adid value at serve time
      } catch (e) { console.error(e); }
      break;
    }
  }
</script>