diff --git a/grype/db/v3/namespace_test.go b/grype/db/v3/namespace_test.go
index e152b6750d8..4225fd7841c 100644
--- a/grype/db/v3/namespace_test.go
+++ b/grype/db/v3/namespace_test.go
@@ -199,8 +199,9 @@ func Test_NamespaceForDistro(t *testing.T) {
 		allDistros.Add(d.String())
 	}
 
-	// TODO: what do we do with mariner
+	// v3 and older schemas don't include these newer distros:
 	allDistros.Remove(distro.Mariner.String())
+	allDistros.Remove(distro.Azure.String())
 
 	for _, test := range tests {
 		name := fmt.Sprintf("%s:%s", test.dist, test.version)
diff --git a/grype/db/v5/namespace/index_test.go b/grype/db/v5/namespace/index_test.go
index 00ac10da3e1..30b86af8340 100644
--- a/grype/db/v5/namespace/index_test.go
+++ b/grype/db/v5/namespace/index_test.go
@@ -137,6 +137,8 @@ func TestIndex_NamespacesForDistro(t *testing.T) {
 		"other-provider:distro:debian:8",
 		"other-provider:distro:redhat:9",
 		"suse:distro:sles:12.5",
+		"mariner:distro:mariner:2.0",
+		"mariner:distro:azurelinux:3.0",
 		"msrc:distro:windows:471816",
 		"ubuntu:distro:ubuntu:18.04",
 		"oracle:distro:oraclelinux:8",
@@ -295,6 +297,20 @@ func TestIndex_NamespacesForDistro(t *testing.T) {
 			distro:     newDistro(t, osDistro.Mariner, "20.1", []string{}),
 			namespaces: nil,
 		},
+		{
+			name:   "Mariner 2.0 matches mariner namespace",
+			distro: newDistro(t, osDistro.Mariner, "2.0", []string{}),
+			namespaces: []*distro.Namespace{
+				distro.NewNamespace("mariner", "mariner", "2.0"),
+			},
+		},
+		{
+			name:   "azurelinux 3 is matched by mariner 3 namespace",
+			distro: newDistro(t, osDistro.Azure, "3.0", []string{}),
+			namespaces: []*distro.Namespace{
+				distro.NewNamespace("mariner", osDistro.Azure, "3.0"),
+			},
+		},
 		{
 			name:   "Oracle Linux Major semvar matches oracle namespace with exact version",
 			distro: newDistro(t, osDistro.OracleLinux, "8", []string{}),
diff --git a/grype/distro/distro_test.go b/grype/distro/distro_test.go
index 29ac4d94afa..c18be758fa1 100644
--- a/grype/distro/distro_test.go
+++ b/grype/distro/distro_test.go
@@ -82,6 +82,16 @@ func Test_NewDistroFromRelease(t *testing.T) {
 			expectedRawVersion: "unstable",
 			expectedVersion:    "",
 		},
+		{
+			name: "azure linux 3",
+			release: linux.Release{
+				ID:        "azurelinux",
+				Version:   "3.0.20240417",
+				VersionID: "3.0",
+			},
+			expectedType:       Azure,
+			expectedRawVersion: "3.0",
+		},
 	}
 
 	for _, test := range tests {
@@ -206,6 +216,11 @@ func Test_NewDistroFromRelease_Coverage(t *testing.T) {
 			Type:    Mariner,
 			Version: "1.0.0",
 		},
+		{
+			fixture: "test-fixtures/os/azurelinux",
+			Type:    Azure,
+			Version: "3.0.0",
+		},
 		{
 			fixture: "test-fixtures/os/rockylinux",
 			Type:    RockyLinux,
diff --git a/grype/distro/test-fixtures/os/azurelinux/etc/os-release b/grype/distro/test-fixtures/os/azurelinux/etc/os-release
new file mode 100644
index 00000000000..b7352fb601a
--- /dev/null
+++ b/grype/distro/test-fixtures/os/azurelinux/etc/os-release
@@ -0,0 +1,9 @@
+NAME="Microsoft Azure Linux"
+VERSION="3.0.20240417"
+ID=azurelinux
+VERSION_ID="3.0"
+PRETTY_NAME="Microsoft Azure Linux 3.0"
+ANSI_COLOR="1;34"
+HOME_URL="https://aka.ms/azurelinux"
+BUG_REPORT_URL="https://aka.ms/azurelinux"
+SUPPORT_URL="https://aka.ms/azurelinux"
diff --git a/grype/distro/type.go b/grype/distro/type.go
index 587bc3168e3..69c73c98322 100644
--- a/grype/distro/type.go
+++ b/grype/distro/type.go
@@ -25,6 +25,7 @@ const (
 	Photon       Type = "photon"
 	Windows      Type = "windows"
 	Mariner      Type = "mariner"
+	Azure        Type = "azurelinux"
 	RockyLinux   Type = "rockylinux"
 	AlmaLinux    Type = "almalinux"
 	Gentoo       Type = "gentoo"
@@ -49,6 +50,7 @@ var All = []Type{
 	Photon,
 	Windows,
 	Mariner,
+	Azure,
 	RockyLinux,
 	AlmaLinux,
 	Gentoo,
@@ -74,6 +76,7 @@ var IDMapping = map[string]Type{
 	"photon":        Photon,
 	"windows":       Windows,
 	"mariner":       Mariner,
+	"azurelinux":    Azure,
 	"rocky":         RockyLinux,
 	"almalinux":     AlmaLinux,
 	"gentoo":        Gentoo,
diff --git a/test/quality/.yardstick.yaml b/test/quality/.yardstick.yaml
index effef38be83..2a827f89e7c 100644
--- a/test/quality/.yardstick.yaml
+++ b/test/quality/.yardstick.yaml
@@ -128,3 +128,44 @@ result-sets:
           version: latest+import-db=db.tar.gz
           takes: SBOM
           label: reference
+  pr_vs_latest_via_sbom_2022:
+    description: "same as 'pr_vs_latest_via_sbom', but includes vulnerabilities from 2022 and before, instead of 2021 and before"
+    max_year: 2022
+    validations:
+      - max-f1-regression: 0.1 # allowed to regress 0.1 on f1 score
+        max-new-false-negatives: 10
+        max-unlabeled-percent: 0
+        max_year: 2022
+        fail_on_empty_match_set: false
+    matrix:
+      images:
+        - docker.io/anchore/test_images:azurelinux3-63671fe@sha256:2d761ba36575ddd4e07d446f4f2a05448298c20e5bdcd3dedfbbc00f9865240d
+
+      tools:
+        - name: syft
+          # note: we want to use a fixed version of syft for capturing all results (NOT "latest")
+          version: v0.98.0
+          produces: SBOM
+          refresh: false
+
+        - name: grype
+          # note: we import a static (pinned) DB as to prevent changes in the DB from affecting the results. The
+          # point of this test is to ensure the correctness of the logic in grype itself with real production data.
+          # By pinning the DB the grype code itself becomes the independent variable under test (and not the
+          # every-changing DB). That being said, we should be updating this DB periodically to ensure what we
+          # are testing with is not too stale.
+          # version: git:current-commit+import-db=db.tar.gz
+          # for local build of grype, use for example:
+          version: path:../../+import-db=db.tar.gz
+          takes: SBOM
+          label: candidate # is candidate better than the current baseline?
+
+        - name: grype
+          # note: we import a static (pinned) DB as to prevent changes in the DB from affecting the results. The
+          # point of this test is to ensure the correctness of the logic in grype itself with real production data.
+          # By pinning the DB the grype code itself becomes the independent variable under test (and not the
+          # every-changing DB). That being said, we should be updating this DB periodically to ensure what we
+          # are testing with is not too stale.
+          version: latest+import-db=db.tar.gz
+          takes: SBOM
+          label: reference # this run is the current baseline
diff --git a/test/quality/Makefile b/test/quality/Makefile
index 574e579f2d4..7f5249f4f9e 100644
--- a/test/quality/Makefile
+++ b/test/quality/Makefile
@@ -27,26 +27,27 @@ all: capture validate ## Fetch or capture all data and run all quality checks
 
 .PHONY: validate
 validate: venv $(VULNERABILITY_LABELS)/Makefile ## Run all quality checks against already collected data
-	$(ACTIVATE_VENV) yardstick validate -r $(RESULT_SET)
+	$(YARDSTICK) validate -r $(RESULT_SET) -r $(RESULT_SET)_2022
 
 .PHONY: capture
 capture: sboms vulns ## Collect and store all syft and grype results
 
-.PHONY: capture
+.PHONY: vulns
 vulns: venv $(TEST_DB) ## Collect and store all grype results
 	$(YARDSTICK) -v result capture -r $(RESULT_SET)
+	$(YARDSTICK) -v result capture -r $(RESULT_SET)_2022
 
 $(TEST_DB):
 	@curl -o $(TEST_DB) -SsL $(TEST_DB_URL)
 
 .PHONY: sboms
 sboms: $(YARDSTICK_RESULT_DIR) venv clear-results ## Collect and store all syft results (deletes all existing results)
-	bash -c "make download-sboms || ($(YARDSTICK) -v result capture -r $(RESULT_SET) --only-producers)"
+	bash -c "make download-sboms || ($(YARDSTICK) -v result capture -r $(RESULT_SET) --only-producers && $(YARDSTICK) -v result capture -r $(RESULT_SET)_2022 --only-producers)"
 
 .PHONY: download-sboms
 download-sboms: $(VULNERABILITY_LABELS)/Makefile
 	cd vulnerability-match-labels && make venv
-	bash -c "export ORAS_CACHE=$(shell pwd)/.oras-cache && make venv && . vulnerability-match-labels/venv/bin/activate && ./vulnerability-match-labels/sboms.py download -r $(RESULT_SET)"
+	bash -c "export ORAS_CACHE=$(shell pwd)/.oras-cache && make venv && . vulnerability-match-labels/venv/bin/activate && ./vulnerability-match-labels/sboms.py download -r $(RESULT_SET) && ./vulnerability-match-labels/sboms.py download -r $(RESULT_SET)_2022"
 
 venv: venv/touchfile
 
diff --git a/test/quality/vulnerability-match-labels b/test/quality/vulnerability-match-labels
index 8ad561f7eee..a9a1e820e22 160000
--- a/test/quality/vulnerability-match-labels
+++ b/test/quality/vulnerability-match-labels
@@ -1 +1 @@
-Subproject commit 8ad561f7eee84ebf3026812dd6f945946a1faa31
+Subproject commit a9a1e820e22d52c94bd70dd5bfce8f29bbdb7ce4