diff --git a/modules/criteoBidAdapter.js b/modules/criteoBidAdapter.js
index 33eb903ab55..c1fcac4ae2f 100644
--- a/modules/criteoBidAdapter.js
+++ b/modules/criteoBidAdapter.js
@@ -24,9 +24,6 @@ export const ADAPTER_VERSION = 36;
 const BIDDER_CODE = 'criteo';
 const CDB_ENDPOINT = 'https://bidder.criteo.com/cdb';
 const PROFILE_ID_INLINE = 207;
-const FLEDGE_SELLER_DOMAIN = 'https://grid-mercury.criteo.com';
-const FLEDGE_SELLER_TIMEOUT = 500;
-const FLEDGE_DECISION_LOGIC_URL = 'https://grid-mercury.criteo.com/fledge/decision';
 export const PROFILE_ID_PUBLISHERTAG = 185;
 export const storage = getStorageManager({ bidderCode: BIDDER_CODE });
 const LOG_PREFIX = 'Criteo: ';
@@ -284,53 +281,13 @@ export const spec = {
       });
     }
 
-    if (isArray(body.ext?.igbid)) {
-      const seller = body.ext.seller || FLEDGE_SELLER_DOMAIN;
-      const sellerTimeout = body.ext.sellerTimeout || FLEDGE_SELLER_TIMEOUT;
-      body.ext.igbid.forEach((igbid) => {
-        const perBuyerSignals = {};
-        igbid.igbuyer.forEach(buyerItem => {
-          perBuyerSignals[buyerItem.origin] = buyerItem.buyerdata;
-        });
-        const bidRequest = request.bidRequests.find(b => b.bidId === igbid.impid);
-        const bidId = bidRequest.bidId;
-        let sellerSignals = body.ext.sellerSignals || {};
-        if (!sellerSignals.floor && bidRequest.params.bidFloor) {
-          sellerSignals.floor = bidRequest.params.bidFloor;
-        }
-        let perBuyerTimeout = { '*': 500 };
-        if (sellerSignals.perBuyerTimeout) {
-          for (const buyer in sellerSignals.perBuyerTimeout) {
-            perBuyerTimeout[buyer] = sellerSignals.perBuyerTimeout[buyer];
-          }
-        }
-        let perBuyerGroupLimits = { '*': 60 };
-        if (sellerSignals.perBuyerGroupLimits) {
-          for (const buyer in sellerSignals.perBuyerGroupLimits) {
-            perBuyerGroupLimits[buyer] = sellerSignals.perBuyerGroupLimits[buyer];
-          }
-        }
-        if (body?.ext?.sellerSignalsPerImp !== undefined) {
-          const sellerSignalsPerImp = body.ext.sellerSignalsPerImp[bidId];
-          if (sellerSignalsPerImp !== undefined) {
-            sellerSignals = {...sellerSignals, ...sellerSignalsPerImp};
-          }
+    if (isArray(body.ext?.igi)) {
+      body.ext.igi.forEach((igi) => {
+        if (isArray(igi?.igs)) {
+          igi.igs.forEach((igs) => {
+            fledgeAuctionConfigs.push(igs);
+          });
         }
-        fledgeAuctionConfigs.push({
-          bidId,
-          config: {
-            seller,
-            sellerSignals,
-            sellerTimeout,
-            perBuyerSignals,
-            perBuyerTimeout,
-            perBuyerGroupLimits,
-            auctionSignals: {},
-            decisionLogicUrl: FLEDGE_DECISION_LOGIC_URL,
-            interestGroupBuyers: Object.keys(perBuyerSignals),
-            sellerCurrency: sellerSignals.currency || '???',
-          },
-        });
       });
     }
 
diff --git a/test/spec/modules/criteoBidAdapter_spec.js b/test/spec/modules/criteoBidAdapter_spec.js
index 726754f39aa..1709acb465f 100755
--- a/test/spec/modules/criteoBidAdapter_spec.js
+++ b/test/spec/modules/criteoBidAdapter_spec.js
@@ -2538,49 +2538,102 @@ describe('The Criteo bidding adapter', function () {
     });
 
     it('should properly parse a bid response with FLEDGE auction configs', function () {
+      let auctionConfig1 = {
+        auctionSignals: {},
+        decisionLogicUrl: 'https://grid-mercury.criteo.com/fledge/decision',
+        interestGroupBuyers: ['https://first-buyer-domain.com', 'https://second-buyer-domain.com'],
+        perBuyerSignals: {
+          'https://first-buyer-domain.com': {
+            foo: 'bar',
+          },
+          'https://second-buyer-domain.com': {
+            foo: 'baz'
+          },
+        },
+        perBuyerTimeout: {
+          '*': 500,
+          'buyer1': 100,
+          'buyer2': 200
+        },
+        perBuyerGroupLimits: {
+          '*': 60,
+          'buyer1': 300,
+          'buyer2': 400
+        },
+        seller: 'https://seller-domain.com',
+        sellerTimeout: 500,
+        sellerSignals: {
+          foo: 'bar',
+          foo2: 'bar2',
+          floor: 1,
+          currency: 'USD',
+          perBuyerTimeout: {
+            'buyer1': 100,
+            'buyer2': 200
+          },
+          perBuyerGroupLimits: {
+            'buyer1': 300,
+            'buyer2': 400
+          },
+        },
+        sellerCurrency: 'USD',
+      };
+      let auctionConfig2 = {
+        auctionSignals: {},
+        decisionLogicUrl: 'https://grid-mercury.criteo.com/fledge/decision',
+        interestGroupBuyers: ['https://first-buyer-domain.com', 'https://second-buyer-domain.com'],
+        perBuyerSignals: {
+          'https://first-buyer-domain.com': {
+            foo: 'bar',
+          },
+          'https://second-buyer-domain.com': {
+            foo: 'baz'
+          },
+        },
+        perBuyerTimeout: {
+          '*': 500,
+          'buyer1': 100,
+          'buyer2': 200
+        },
+        perBuyerGroupLimits: {
+          '*': 60,
+          'buyer1': 300,
+          'buyer2': 400
+        },
+        seller: 'https://seller-domain.com',
+        sellerTimeout: 500,
+        sellerSignals: {
+          foo: 'bar',
+          floor: 1,
+          perBuyerTimeout: {
+            'buyer1': 100,
+            'buyer2': 200
+          },
+          perBuyerGroupLimits: {
+            'buyer1': 300,
+            'buyer2': 400
+          },
+        },
+        sellerCurrency: '???'
+      };
       const response = {
         body: {
           ext: {
-            igbid: [{
+            igi: [{
               impid: 'test-bidId',
-              igbuyer: [{
-                origin: 'https://first-buyer-domain.com',
-                buyerdata: {
-                  foo: 'bar',
-                },
-              }, {
-                origin: 'https://second-buyer-domain.com',
-                buyerdata: {
-                  foo: 'baz',
-                },
+              igs: [{
+                impid: 'test-bidId',
+                bidId: 'test-bidId',
+                config: auctionConfig1
               }]
             }, {
               impid: 'test-bidId-2',
-              igbuyer: [{
-                origin: 'https://first-buyer-domain.com',
-                buyerdata: {
-                  foo: 'bar',
-                },
-              }, {
-                origin: 'https://second-buyer-domain.com',
-                buyerdata: {
-                  foo: 'baz',
-                },
+              igs: [{
+                impid: 'test-bidId-2',
+                bidId: 'test-bidId-2',
+                config: auctionConfig2
               }]
-            }],
-            seller: 'https://seller-domain.com',
-            sellerTimeout: 500,
-            sellerSignals: {
-              foo: 'bar',
-              perBuyerTimeout: { 'buyer1': 100, 'buyer2': 200 },
-              perBuyerGroupLimits: { 'buyer1': 300, 'buyer2': 400 },
-            },
-            sellerSignalsPerImp: {
-              'test-bidId': {
-                foo2: 'bar2',
-                currency: 'USD'
-              },
-            },
+            }]
           },
         },
       };
@@ -2631,87 +2684,13 @@ describe('The Criteo bidding adapter', function () {
       expect(interpretedResponse.fledgeAuctionConfigs).to.have.lengthOf(2);
       expect(interpretedResponse.fledgeAuctionConfigs[0]).to.deep.equal({
         bidId: 'test-bidId',
-        config: {
-          auctionSignals: {},
-          decisionLogicUrl: 'https://grid-mercury.criteo.com/fledge/decision',
-          interestGroupBuyers: ['https://first-buyer-domain.com', 'https://second-buyer-domain.com'],
-          perBuyerSignals: {
-            'https://first-buyer-domain.com': {
-              foo: 'bar',
-            },
-            'https://second-buyer-domain.com': {
-              foo: 'baz'
-            },
-          },
-          perBuyerTimeout: {
-            '*': 500,
-            'buyer1': 100,
-            'buyer2': 200
-          },
-          perBuyerGroupLimits: {
-            '*': 60,
-            'buyer1': 300,
-            'buyer2': 400
-          },
-          seller: 'https://seller-domain.com',
-          sellerTimeout: 500,
-          sellerSignals: {
-            foo: 'bar',
-            foo2: 'bar2',
-            floor: 1,
-            currency: 'USD',
-            perBuyerTimeout: {
-              'buyer1': 100,
-              'buyer2': 200
-            },
-            perBuyerGroupLimits: {
-              'buyer1': 300,
-              'buyer2': 400
-            },
-          },
-          sellerCurrency: 'USD',
-        },
+        impid: 'test-bidId',
+        config: auctionConfig1,
       });
       expect(interpretedResponse.fledgeAuctionConfigs[1]).to.deep.equal({
         bidId: 'test-bidId-2',
-        config: {
-          auctionSignals: {},
-          decisionLogicUrl: 'https://grid-mercury.criteo.com/fledge/decision',
-          interestGroupBuyers: ['https://first-buyer-domain.com', 'https://second-buyer-domain.com'],
-          perBuyerSignals: {
-            'https://first-buyer-domain.com': {
-              foo: 'bar',
-            },
-            'https://second-buyer-domain.com': {
-              foo: 'baz'
-            },
-          },
-          perBuyerTimeout: {
-            '*': 500,
-            'buyer1': 100,
-            'buyer2': 200
-          },
-          perBuyerGroupLimits: {
-            '*': 60,
-            'buyer1': 300,
-            'buyer2': 400
-          },
-          seller: 'https://seller-domain.com',
-          sellerTimeout: 500,
-          sellerSignals: {
-            foo: 'bar',
-            floor: 1,
-            perBuyerTimeout: {
-              'buyer1': 100,
-              'buyer2': 200
-            },
-            perBuyerGroupLimits: {
-              'buyer1': 300,
-              'buyer2': 400
-            },
-          },
-          sellerCurrency: '???'
-        },
+        impid: 'test-bidId-2',
+        config: auctionConfig2,
       });
     });