diff --git a/.github/workflows/ci-maven.yaml b/.github/workflows/ci-maven.yaml
index e614dea160..2540ce063b 100644
--- a/.github/workflows/ci-maven.yaml
+++ b/.github/workflows/ci-maven.yaml
@@ -22,9 +22,12 @@ jobs:
       - run: java -version
       - name: Unit Tests
         run: |
-          mvn install --batch-mode --no-transfer-progress -Dcheckstyle.skip \
-              -Dfmt.skip
+          mvn test --batch-mode --no-transfer-progress -Dcheckstyle.skip \
+              -Dfmt.skip -DenableTestCoverage
       - run: bazelisk version
+      - name: Install maven modules
+        run: |
+          mvn install -B -ntp -DskipTests -Dclirr.skip -Dcheckstyle.skip
       - name: Integration Tests
         run: |
           bazelisk --batch test //test/integration/...
@@ -71,7 +74,6 @@ jobs:
           set -x
           export JAVA_HOME=$JAVA11_HOME
           export PATH=${JAVA_HOME}/bin:$PATH
-
           # Why not compile? It's because the process needs to package jar so
           # that gapic-generator-java module can use testlib modules of gax.
           mvn verify --batch-mode --no-transfer-progress -Dcheckstyle.skip \
diff --git a/coverage-report/README.md b/coverage-report/README.md
new file mode 100644
index 0000000000..9326c426a2
--- /dev/null
+++ b/coverage-report/README.md
@@ -0,0 +1,23 @@
+## Coverage Report
+
+This module gathers aggregated jacoco test coverage metrics across the `gax-java` and `showcase` modules. The purpose of
+the metrics is to provide insights into how much of GAX code is being exercised by showcase and GAX tests and where 
+(unit tests versus integration tests). They will also provide information on any change in coverage observed
+as showcase tests continue to be added to the repository.
+
+### Unit Test Coverage
+In order to view aggregate unit test coverage of GAX in both `gax-java` and `showcase`:
+
+1. At the root of the repository, run `mvn clean test -DenableTestCoverage`.
+2. The metrics can be found at `gapic-generator-java/coverage-report/target/site/jacoco-aggregate/index.html`
+
+![Screenshot 2023-03-03 at 6 32 50 PM](https://user-images.githubusercontent.com/66699525/222854612-787b4dde-f9a3-469a-8227-8f46dc0a4a20.png)
+
+### Integration Test Coverage
+
+In order to view aggregate integration test coverage of GAX in both `gax-java` and `showcase`:
+
+1. At the root of the repository, run `mvn clean verify -DskipUnitTests -DenableTestCoverage -Penable-integration-tests`.
+2. The metrics can be found at `gapic-generator-java/coverage-report/target/site/jacoco-aggregate/index.html`
+
+![Screenshot 2023-03-03 at 6 36 26 PM](https://user-images.githubusercontent.com/66699525/222854973-f8a96f01-abc1-4e6b-9ab8-99b5e50dec6a.png)
\ No newline at end of file
diff --git a/coverage-report/pom.xml b/coverage-report/pom.xml
new file mode 100644
index 0000000000..7851a2aa7f
--- /dev/null
+++ b/coverage-report/pom.xml
@@ -0,0 +1,81 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.google.cloud</groupId>
+    <artifactId>coverage-report</artifactId>
+    <packaging>pom</packaging>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>Jacoco Aggregrate Test Coverage Report</name>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <checkstyle.skip>true</checkstyle.skip>
+        <clirr.skip>true</clirr.skip>
+        <enforcer.skip>true</enforcer.skip>
+        <maven.compiler.release>8</maven.compiler.release>
+        <fmt.skip>true</fmt.skip>
+        <sonar.coverage.jacoco.xmlReportPaths>
+            ${project.basedir}/coverage-report/target/site/
+            jacoco-aggregate/jacoco.xml
+        </sonar.coverage.jacoco.xmlReportPaths>
+    </properties>
+
+        <dependencies>
+            <dependency>
+                <groupId>com.google.cloud</groupId>
+                <artifactId>gapic-showcase</artifactId>
+                <version>0.0.1-SNAPSHOT</version>
+                <scope>test</scope>
+            </dependency>
+            <dependency>
+                <groupId>com.google.api</groupId>
+                <artifactId>gax</artifactId>
+                <version>2.23.3-SNAPSHOT</version> <!-- {x-version-update:gax:current} -->
+            </dependency>
+            <dependency>
+                <groupId>com.google.api</groupId>
+                <artifactId>gax-grpc</artifactId>
+                <version>2.23.3-SNAPSHOT</version> <!-- {x-version-update:gax:current} -->
+            </dependency>
+            <dependency>
+                <groupId>com.google.api</groupId>
+                <artifactId>gax-httpjson</artifactId>
+                <version>0.108.3-SNAPSHOT</version> <!-- {x-version-update:gax:current} -->
+            </dependency>
+        </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.jacoco</groupId>
+                <artifactId>jacoco-maven-plugin</artifactId>
+                <version>0.8.8</version>
+                <executions>
+                    <execution>
+                        <id>unit-tests-report-aggregate</id>
+                        <goals>
+                            <goal>report-aggregate</goal>
+                        </goals>
+                        <phase>test</phase>
+                    </execution>
+                    <execution>
+                        <id>integration-tests-report-aggregate</id>
+                        <goals>
+                            <goal>report-aggregate</goal>
+                        </goals>
+                        <phase>integration-test</phase>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>com.coveo</groupId>
+                <artifactId>fmt-maven-plugin</artifactId>
+                <version>2.9</version>
+            </plugin>
+        </plugins>
+    </build>
+
+
+</project>
diff --git a/gapic-generator-java-pom-parent/pom.xml b/gapic-generator-java-pom-parent/pom.xml
index 91addcbc56..1c7a9ce31d 100644
--- a/gapic-generator-java-pom-parent/pom.xml
+++ b/gapic-generator-java-pom-parent/pom.xml
@@ -95,8 +95,89 @@
         </plugins>
       </build>
     </profile>
-  </profiles>
 
+    <profile>
+      <id>test-coverage</id>
+      <activation>
+        <property>
+          <name>enableTestCoverage</name>
+        </property>
+      </activation>
+      <build>
+        <pluginManagement>
+          <plugins>
+            <plugin>
+              <groupId>org.apache.maven.plugins</groupId>
+              <artifactId>maven-surefire-plugin</artifactId>
+              <version>3.0.0-M8</version>
+              <configuration>
+                <!-- Excludes integration tests and smoke tests when unit tests are run -->
+                <excludes>
+                  <exclude>**/*SmokeTest.java</exclude>
+                  <exclude>**/IT*.java</exclude>
+                </excludes>
+                <reportNameSuffix>sponge_log</reportNameSuffix>
+                <argLine>${surefire.jacoco.args}</argLine>
+                <skipTests>${skipUnitTests}</skipTests>
+              </configuration>
+            </plugin>
+
+            <plugin>
+              <groupId>org.apache.maven.plugins</groupId>
+              <artifactId>maven-failsafe-plugin</artifactId>
+              <version>3.0.0-M8</version>
+              <executions>
+                <execution>
+                  <goals>
+                    <goal>integration-test</goal>
+                    <goal>verify</goal>
+                  </goals>
+                </execution>
+              </executions>
+              <configuration>
+                <forkedProcessTimeoutInSeconds>3600</forkedProcessTimeoutInSeconds>
+                <reportNameSuffix>sponge_log</reportNameSuffix>
+                <includes>
+                  <include>**/IT*.java</include>
+                  <include>**/*SmokeTest.java</include>
+                </includes>
+                <argLine>${failsafe.jacoco.args}</argLine>
+              </configuration>
+            </plugin>
+          </plugins>
+        </pluginManagement>
+        <plugins>
+          <plugin>
+            <groupId>org.jacoco</groupId>
+            <artifactId>jacoco-maven-plugin</artifactId>
+            <version>0.8.8</version>
+            <executions>
+              <execution>
+                <id>unit-test-execution</id>
+                <goals>
+                  <goal>prepare-agent</goal>
+                </goals>
+                <configuration>
+                  <propertyName>surefire.jacoco.args</propertyName>
+                </configuration>
+              </execution>
+              <execution>
+                <id>integration-test-execution</id>
+                <phase>pre-integration-test</phase>
+                <goals>
+                  <goal>prepare-agent</goal>
+                </goals>
+                <configuration>
+                  <propertyName>failsafe.jacoco.args</propertyName>
+                </configuration>
+              </execution>
+            </executions>
+          </plugin>
+        </plugins>
+      </build>
+    </profile>
+  </profiles>
+  
   <repositories>
     <repository>
       <id>google-maven-central-copy</id>
diff --git a/pom.xml b/pom.xml
index 300f0d658b..8cf21209d2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -77,6 +77,19 @@
         </plugins>
       </build>
     </profile>
+
+    <profile>
+      <id>activate-test-coverage</id>
+      <activation>
+        <property>
+          <name>enableTestCoverage</name>
+        </property>
+      </activation>
+      <modules>
+        <module>showcase</module>
+        <module>coverage-report</module>
+      </modules>
+    </profile>
   </profiles>
 
 </project>
diff --git a/showcase/gapic-showcase/pom.xml b/showcase/gapic-showcase/pom.xml
index 8c3de921fd..c9ced7d6b5 100644
--- a/showcase/gapic-showcase/pom.xml
+++ b/showcase/gapic-showcase/pom.xml
@@ -5,7 +5,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>gapic-showcase</artifactId>
-  <version>0.0.1-SHAPSHOT</version>
+  <version>0.0.1-SNAPSHOT</version>
   <packaging>jar</packaging>
   <name>GAPIC Showcase Client</name>
   <description>
@@ -171,18 +171,21 @@
     <dependency>
       <groupId>com.google.api</groupId>
       <artifactId>gax</artifactId>
+      <type>test-jar</type>
       <classifier>testlib</classifier>
       <scope>test</scope>
     </dependency>
     <dependency>
       <groupId>com.google.api</groupId>
       <artifactId>gax-grpc</artifactId>
+      <type>test-jar</type>
       <classifier>testlib</classifier>
       <scope>test</scope>
     </dependency>
     <dependency>
       <groupId>com.google.api</groupId>
       <artifactId>gax-httpjson</artifactId>
+      <type>test-jar</type>
       <classifier>testlib</classifier>
       <scope>test</scope>
     </dependency>