diff --git a/functional_tests/duplicate_ports.json b/functional_tests/duplicate_ports.json
index 77b2920a3..c9f272326 100644
--- a/functional_tests/duplicate_ports.json
+++ b/functional_tests/duplicate_ports.json
@@ -240,7 +240,6 @@
     },
     "tags": {
         "ingress-for-aks-cluster-id": "/subscriptions/subid/resourcegroups/aksresgp/providers/Microsoft.ContainerService/managedClusters/aksname",
-        "last-updated-by-k8s-ingress": "2009-11-17 20:34:58.651387237 +0000 UTC",
         "managed-by-k8s-ingress": "a/b/c"
     }
 }
\ No newline at end of file
diff --git a/functional_tests/health_probes_same_labels_different_namespaces.json b/functional_tests/health_probes_same_labels_different_namespaces.json
index c243f1d04..633e18c7e 100644
--- a/functional_tests/health_probes_same_labels_different_namespaces.json
+++ b/functional_tests/health_probes_same_labels_different_namespaces.json
@@ -313,7 +313,6 @@
     },
     "tags": {
         "ingress-for-aks-cluster-id": "/subscriptions/subid/resourcegroups/aksresgp/providers/Microsoft.ContainerService/managedClusters/aksname",
-        "last-updated-by-k8s-ingress": "2009-11-17 20:34:58.651387237 +0000 UTC",
         "managed-by-k8s-ingress": "a/b/c"
     }
 }
\ No newline at end of file
diff --git a/functional_tests/one_ingress_https_backend.json b/functional_tests/one_ingress_https_backend.json
index fe271c209..d0f8c723d 100644
--- a/functional_tests/one_ingress_https_backend.json
+++ b/functional_tests/one_ingress_https_backend.json
@@ -282,7 +282,6 @@
     },
     "tags": {
         "ingress-for-aks-cluster-id": "/subscriptions/subid/resourcegroups/aksresgp/providers/Microsoft.ContainerService/managedClusters/aksname",
-        "last-updated-by-k8s-ingress": "2009-11-17 20:34:58.651387237 +0000 UTC",
         "managed-by-k8s-ingress": "a/b/c"
     }
 }
\ No newline at end of file
diff --git a/functional_tests/one_ingress_https_backend_without_backend_protocol.json b/functional_tests/one_ingress_https_backend_without_backend_protocol.json
index 4456c9cf9..d86428d2d 100644
--- a/functional_tests/one_ingress_https_backend_without_backend_protocol.json
+++ b/functional_tests/one_ingress_https_backend_without_backend_protocol.json
@@ -206,7 +206,6 @@
     },
     "tags": {
         "ingress-for-aks-cluster-id": "/subscriptions/subid/resourcegroups/aksresgp/providers/Microsoft.ContainerService/managedClusters/aksname",
-        "last-updated-by-k8s-ingress": "2009-11-17 20:34:58.651387237 +0000 UTC",
         "managed-by-k8s-ingress": "a/b/c"
     }
 }
\ No newline at end of file
diff --git a/functional_tests/one_ingress_slash_nothing.json b/functional_tests/one_ingress_slash_nothing.json
index a2c38433d..0b727840b 100644
--- a/functional_tests/one_ingress_slash_nothing.json
+++ b/functional_tests/one_ingress_slash_nothing.json
@@ -176,7 +176,6 @@
     },
     "tags": {
         "ingress-for-aks-cluster-id": "/subscriptions/subid/resourcegroups/aksresgp/providers/Microsoft.ContainerService/managedClusters/aksname",
-        "last-updated-by-k8s-ingress": "2009-11-17 20:34:58.651387237 +0000 UTC",
         "managed-by-k8s-ingress": "a/b/c"
     }
 }
\ No newline at end of file
diff --git a/functional_tests/one_ingress_slash_slashnothing.json b/functional_tests/one_ingress_slash_slashnothing.json
index 5b8010b48..083396c94 100644
--- a/functional_tests/one_ingress_slash_slashnothing.json
+++ b/functional_tests/one_ingress_slash_slashnothing.json
@@ -249,7 +249,6 @@
     },
     "tags": {
         "ingress-for-aks-cluster-id": "/subscriptions/subid/resourcegroups/aksresgp/providers/Microsoft.ContainerService/managedClusters/aksname",
-        "last-updated-by-k8s-ingress": "2009-11-17 20:34:58.651387237 +0000 UTC",
         "managed-by-k8s-ingress": "a/b/c"
     }
 }
\ No newline at end of file
diff --git a/functional_tests/one_ingress_with_multiple_path_rules.json b/functional_tests/one_ingress_with_multiple_path_rules.json
index e1e6af4c7..aef536a2a 100644
--- a/functional_tests/one_ingress_with_multiple_path_rules.json
+++ b/functional_tests/one_ingress_with_multiple_path_rules.json
@@ -325,7 +325,6 @@
     },
     "tags": {
         "ingress-for-aks-cluster-id": "/subscriptions/subid/resourcegroups/aksresgp/providers/Microsoft.ContainerService/managedClusters/aksname",
-        "last-updated-by-k8s-ingress": "2009-11-17 20:34:58.651387237 +0000 UTC",
         "managed-by-k8s-ingress": "a/b/c"
     }
 }
\ No newline at end of file
diff --git a/functional_tests/three_ingresses.json b/functional_tests/three_ingresses.json
index 93ab305a9..734ed27b9 100644
--- a/functional_tests/three_ingresses.json
+++ b/functional_tests/three_ingresses.json
@@ -405,7 +405,6 @@
     },
     "tags": {
         "ingress-for-aks-cluster-id": "/subscriptions/subid/resourcegroups/aksresgp/providers/Microsoft.ContainerService/managedClusters/aksname",
-        "last-updated-by-k8s-ingress": "2009-11-17 20:34:58.651387237 +0000 UTC",
         "managed-by-k8s-ingress": "a/b/c"
     }
 }
\ No newline at end of file
diff --git a/functional_tests/two_ingresses_same_domain_tls_notls.json b/functional_tests/two_ingresses_same_domain_tls_notls.json
index 2e7d330ef..46e9e18c1 100644
--- a/functional_tests/two_ingresses_same_domain_tls_notls.json
+++ b/functional_tests/two_ingresses_same_domain_tls_notls.json
@@ -313,7 +313,6 @@
     },
     "tags": {
         "ingress-for-aks-cluster-id": "/subscriptions/subid/resourcegroups/aksresgp/providers/Microsoft.ContainerService/managedClusters/aksname",
-        "last-updated-by-k8s-ingress": "2009-11-17 20:34:58.651387237 +0000 UTC",
         "managed-by-k8s-ingress": "a/b/c"
     }
 }
\ No newline at end of file
diff --git a/functional_tests/two_ingresses_same_hostname_value_different_locations.json b/functional_tests/two_ingresses_same_hostname_value_different_locations.json
index e71aa0d66..f7d98f25f 100644
--- a/functional_tests/two_ingresses_same_hostname_value_different_locations.json
+++ b/functional_tests/two_ingresses_same_hostname_value_different_locations.json
@@ -234,7 +234,6 @@
     },
     "tags": {
         "ingress-for-aks-cluster-id": "/subscriptions/subid/resourcegroups/aksresgp/providers/Microsoft.ContainerService/managedClusters/aksname",
-        "last-updated-by-k8s-ingress": "2009-11-17 20:34:58.651387237 +0000 UTC",
         "managed-by-k8s-ingress": "a/b/c"
     }
 }
\ No newline at end of file
diff --git a/functional_tests/two_ingresses_slash_slashsomething.json b/functional_tests/two_ingresses_slash_slashsomething.json
index 5b8010b48..083396c94 100644
--- a/functional_tests/two_ingresses_slash_slashsomething.json
+++ b/functional_tests/two_ingresses_slash_slashsomething.json
@@ -249,7 +249,6 @@
     },
     "tags": {
         "ingress-for-aks-cluster-id": "/subscriptions/subid/resourcegroups/aksresgp/providers/Microsoft.ContainerService/managedClusters/aksname",
-        "last-updated-by-k8s-ingress": "2009-11-17 20:34:58.651387237 +0000 UTC",
         "managed-by-k8s-ingress": "a/b/c"
     }
 }
\ No newline at end of file
diff --git a/functional_tests/two_ingresses_with_and_without_extended_hostname.json b/functional_tests/two_ingresses_with_and_without_extended_hostname.json
index 2a08043c6..135b9e00c 100644
--- a/functional_tests/two_ingresses_with_and_without_extended_hostname.json
+++ b/functional_tests/two_ingresses_with_and_without_extended_hostname.json
@@ -309,7 +309,6 @@
     },
     "tags": {
         "ingress-for-aks-cluster-id": "/subscriptions/subid/resourcegroups/aksresgp/providers/Microsoft.ContainerService/managedClusters/aksname",
-        "last-updated-by-k8s-ingress": "2009-11-17 20:34:58.651387237 +0000 UTC",
         "managed-by-k8s-ingress": "a/b/c"
     }
 }
\ No newline at end of file
diff --git a/functional_tests/waf_annotation.json b/functional_tests/waf_annotation.json
index c7569f148..bc3a629b6 100644
--- a/functional_tests/waf_annotation.json
+++ b/functional_tests/waf_annotation.json
@@ -255,7 +255,6 @@
     },
     "tags": {
         "ingress-for-aks-cluster-id": "/subscriptions/subid/resourcegroups/aksresgp/providers/Microsoft.ContainerService/managedClusters/aksname",
-        "last-updated-by-k8s-ingress": "2009-11-17 20:34:58.651387237 +0000 UTC",
         "managed-by-k8s-ingress": "a/b/c"
     }
 }
\ No newline at end of file
diff --git a/pkg/appgw/appgw_test.go b/pkg/appgw/appgw_test.go
index cc5bda01b..b0d411203 100644
--- a/pkg/appgw/appgw_test.go
+++ b/pkg/appgw/appgw_test.go
@@ -386,11 +386,10 @@ var _ = Describe("Tests `appgw.ConfigBuilder`", func() {
 		}
 
 		// Check tags
-		Expect(len(appGW.Tags)).To(Equal(3))
+		Expect(len(appGW.Tags)).To(Equal(2))
 		expected := map[string]*string{
-			tags.ManagedByK8sIngress:     to.StringPtr("a/b/c"),
-			tags.IngressForAKSClusterID:  to.StringPtr("/subscriptions/subid/resourcegroups/aksresgp/providers/Microsoft.ContainerService/managedClusters/aksname"),
-			tags.LastUpdatedByK8sIngress: to.StringPtr("2009-11-17 20:34:58.651387237 +0000 UTC"),
+			tags.ManagedByK8sIngress:    to.StringPtr("a/b/c"),
+			tags.IngressForAKSClusterID: to.StringPtr("/subscriptions/subid/resourcegroups/aksresgp/providers/Microsoft.ContainerService/managedClusters/aksname"),
 		}
 		Expect(appGW.Tags).To(Equal(expected))
 	}
diff --git a/pkg/appgw/configbuilder.go b/pkg/appgw/configbuilder.go
index 802b5ca8f..b005b2cdf 100644
--- a/pkg/appgw/configbuilder.go
+++ b/pkg/appgw/configbuilder.go
@@ -11,10 +11,10 @@ import (
 
 	n "github.com/Azure/azure-sdk-for-go/services/network/mgmt/2020-05-01/network"
 	"github.com/Azure/go-autorest/autorest/to"
-	"k8s.io/klog/v2"
 	v1 "k8s.io/api/core/v1"
 	"k8s.io/api/extensions/v1beta1"
 	"k8s.io/client-go/tools/record"
+	"k8s.io/klog/v2"
 
 	"github.com/Azure/application-gateway-kubernetes-ingress/pkg/annotations"
 	"github.com/Azure/application-gateway-kubernetes-ingress/pkg/azure"
@@ -255,7 +255,6 @@ func (c *appGwConfigBuilder) addTags() {
 	} else {
 		klog.V(5).Infof("Error while parsing cluster resource ID for tagging: %s", err)
 	}
-	c.appGw.Tags[tags.LastUpdatedByK8sIngress] = to.StringPtr(c.clock.Now().String())
 }
 
 // GetVersion returns a string representing the version of AGIC.
diff --git a/pkg/appgw/configbuilder_test.go b/pkg/appgw/configbuilder_test.go
index f8566b8ab..c91c82737 100644
--- a/pkg/appgw/configbuilder_test.go
+++ b/pkg/appgw/configbuilder_test.go
@@ -422,7 +422,6 @@ var _ = Describe("Tests `appgw.ConfigBuilder`", func() {
 --    },
 --    "tags": {
 --        "ingress-for-aks-cluster-id": "/subscriptions/subid/resourcegroups/aksresgp/providers/Microsoft.ContainerService/managedClusters/aksname",
---        "last-updated-by-k8s-ingress": "2009-11-17 20:34:58.651387237 +0000 UTC",
 --        "managed-by-k8s-ingress": "a/b/c"
 --    }
 --}`
@@ -655,7 +654,6 @@ var _ = Describe("Tests `appgw.ConfigBuilder`", func() {
 --    },
 --    "tags": {
 --        "ingress-for-aks-cluster-id": "/subscriptions/subid/resourcegroups/aksresgp/providers/Microsoft.ContainerService/managedClusters/aksname",
---        "last-updated-by-k8s-ingress": "2009-11-17 20:34:58.651387237 +0000 UTC",
 --        "managed-by-k8s-ingress": "a/b/c"
 --    }
 --}`
@@ -935,7 +933,6 @@ var _ = Describe("Tests `appgw.ConfigBuilder`", func() {
 --    },
 --    "tags": {
 --        "ingress-for-aks-cluster-id": "/subscriptions/subid/resourcegroups/aksresgp/providers/Microsoft.ContainerService/managedClusters/aksname",
---        "last-updated-by-k8s-ingress": "2009-11-17 20:34:58.651387237 +0000 UTC",
 --        "managed-by-k8s-ingress": "a/b/c"
 --    }
 --}`