diff --git a/maven-modules/maven-simple/maven-dependency/pom.xml b/maven-modules/maven-simple/maven-dependency/pom.xml
index 46c59409ef..ac4902e1ad 100644
--- a/maven-modules/maven-simple/maven-dependency/pom.xml
+++ b/maven-modules/maven-simple/maven-dependency/pom.xml
@@ -9,7 +9,7 @@
 
 	<parent>
 		<groupId>com.baeldung</groupId>
-		<artifactId>maven-modules</artifactId>
+		<artifactId>maven-simple</artifactId>
 		<version>0.0.1-SNAPSHOT</version>
 	</parent>
 
@@ -18,7 +18,7 @@
 			<dependency>
 				<groupId>org.apache.commons</groupId>
 				<artifactId>commons-lang3</artifactId>
-				<version>3.12.0</version>
+				<version>${commons-lang3.version}</version>
 			</dependency>
 		</dependencies>
 	</dependencyManagement>
diff --git a/maven-modules/maven-simple/parent-project/core/pom.xml b/maven-modules/maven-simple/parent-project/core/pom.xml
new file mode 100644
index 0000000000..5ae3f6a0bb
--- /dev/null
+++ b/maven-modules/maven-simple/parent-project/core/pom.xml
@@ -0,0 +1,16 @@
+<?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>org.baeldung</groupId>
+	<artifactId>core</artifactId>
+	<name>core</name>
+
+	<parent>
+		<artifactId>parent-project</artifactId>
+		<groupId>com.baeldung</groupId>
+		<version>1.0-SNAPSHOT</version>
+	</parent>
+
+</project>
diff --git a/maven-modules/maven-simple/parent-project/pom.xml b/maven-modules/maven-simple/parent-project/pom.xml
new file mode 100644
index 0000000000..7d541a3353
--- /dev/null
+++ b/maven-modules/maven-simple/parent-project/pom.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<artifactId>parent-project</artifactId>
+	<version>1.0-SNAPSHOT</version>
+	<name>parent-project</name>
+	<packaging>pom</packaging>
+
+	<parent>
+		<groupId>com.baeldung</groupId>
+		<artifactId>maven-simple</artifactId>
+		<version>0.0.1-SNAPSHOT</version>
+	</parent>
+
+	<modules>
+		<module>core</module>
+		<module>service</module>
+		<module>webapp</module>
+	</modules>
+</project>
diff --git a/maven-modules/maven-simple/parent-project/service/pom.xml b/maven-modules/maven-simple/parent-project/service/pom.xml
new file mode 100644
index 0000000000..b20b3ad1d2
--- /dev/null
+++ b/maven-modules/maven-simple/parent-project/service/pom.xml
@@ -0,0 +1,16 @@
+<?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>org.baeldung</groupId>
+	<artifactId>service</artifactId>
+	<name>service</name>
+
+	<parent>
+		<artifactId>parent-project</artifactId>
+		<groupId>com.baeldung</groupId>
+		<version>1.0-SNAPSHOT</version>
+	</parent>
+
+</project>
diff --git a/maven-modules/maven-simple/parent-project/webapp/pom.xml b/maven-modules/maven-simple/parent-project/webapp/pom.xml
new file mode 100644
index 0000000000..05594d0995
--- /dev/null
+++ b/maven-modules/maven-simple/parent-project/webapp/pom.xml
@@ -0,0 +1,16 @@
+<?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>org.baeldung</groupId>
+	<artifactId>webapp</artifactId>
+	<name>webapp</name>
+
+	<parent>
+		<artifactId>parent-project</artifactId>
+		<groupId>com.baeldung</groupId>
+		<version>1.0-SNAPSHOT</version>
+	</parent>
+
+</project>
diff --git a/maven-modules/maven-simple/plugin-management/pom.xml b/maven-modules/maven-simple/plugin-management/pom.xml
index b680d1d39b..9ca65dd549 100644
--- a/maven-modules/maven-simple/plugin-management/pom.xml
+++ b/maven-modules/maven-simple/plugin-management/pom.xml
@@ -7,7 +7,7 @@
 	<packaging>pom</packaging>
 
 	<parent>
-		<artifactId>maven-modules</artifactId>
+		<artifactId>maven-simple</artifactId>
 		<groupId>com.baeldung</groupId>
 		<version>0.0.1-SNAPSHOT</version>
 	</parent>
diff --git a/maven-modules/maven-simple/plugin-management/submodule-2/pom.xml b/maven-modules/maven-simple/plugin-management/submodule-2/pom.xml
index e50d3cc26d..df460ec159 100644
--- a/maven-modules/maven-simple/plugin-management/submodule-2/pom.xml
+++ b/maven-modules/maven-simple/plugin-management/submodule-2/pom.xml
@@ -1,14 +1,14 @@
 <?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>
-    <artifactId>submodule-2</artifactId>
+	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>
+	<artifactId>submodule-2</artifactId>
 
-    <parent>
-        <artifactId>plugin-management</artifactId>
-        <groupId>com.baeldung</groupId>
-        <version>0.0.1-SNAPSHOT</version>
-    </parent>
+	<parent>
+		<artifactId>plugin-management</artifactId>
+		<groupId>com.baeldung</groupId>
+		<version>0.0.1-SNAPSHOT</version>
+	</parent>
 
 </project>
\ No newline at end of file
diff --git a/maven-modules/maven-simple/pom.xml b/maven-modules/maven-simple/pom.xml
index 87df6a9bca..7272ef45f1 100644
--- a/maven-modules/maven-simple/pom.xml
+++ b/maven-modules/maven-simple/pom.xml
@@ -1,22 +1,34 @@
-<?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>
-	<artifactId>maven-simple</artifactId>
-	<name>maven-simple</name>
-	<packaging>pom</packaging>
-
-	<parent>
-		<groupId>com.baeldung</groupId>
-		<artifactId>maven-modules</artifactId>
-		<version>0.0.1-SNAPSHOT</version>
-	</parent>
-
-	<modules>
-		<module>maven-profiles</module>
-		<module>plugin-management</module>
-		<module>maven-dependency</module>
-	</modules>
-
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<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>
+  	
+  <artifactId>maven-simple</artifactId>
+  	
+  <name>maven-simple</name>
+  	
+  <packaging>pom</packaging>
+  	
+  <parent>
+    		
+    <groupId>com.baeldung</groupId>
+    		
+    <artifactId>maven-modules</artifactId>
+    		
+    <version>0.0.1-SNAPSHOT</version>
+    	
+  </parent>
+  	
+  <modules>
+    		
+    <module>maven-profiles</module>
+    		
+    <module>plugin-management</module>
+    		
+    <module>maven-dependency</module>
+    	  
+    <module>parent-project</module>
+      
+  </modules>
+  
 </project>