diff --git a/ddd/pom.xml b/ddd/pom.xml
index 749e444e52ee..4ac65ea8413f 100644
--- a/ddd/pom.xml
+++ b/ddd/pom.xml
@@ -9,10 +9,10 @@
     <description>DDD series examples</description>
 
     <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.0.6.RELEASE</version>
-        <relativePath /> <!-- lookup parent from repository -->
+        <artifactId>parent-boot-2</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../parent-boot-2</relativePath>
     </parent>
 
     <dependencies>
@@ -86,6 +86,7 @@
     <properties>
         <joda-money.version>1.0.1</joda-money.version>
         <maven-surefire-plugin.version>2.22.0</maven-surefire-plugin.version>
+        <spring-boot.version>2.0.6.RELEASE</spring-boot.version>
     </properties>
 	
 </project>
\ No newline at end of file
diff --git a/ddd/src/test/java/com/baeldung/ddd/order/OrderTest.java b/ddd/src/test/java/com/baeldung/ddd/order/OrderUnitTest.java
similarity index 99%
rename from ddd/src/test/java/com/baeldung/ddd/order/OrderTest.java
rename to ddd/src/test/java/com/baeldung/ddd/order/OrderUnitTest.java
index 431a6a5293a8..502827960aba 100644
--- a/ddd/src/test/java/com/baeldung/ddd/order/OrderTest.java
+++ b/ddd/src/test/java/com/baeldung/ddd/order/OrderUnitTest.java
@@ -11,7 +11,7 @@
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 
-class OrderTest {
+class OrderUnitTest {
     @DisplayName("given order with two items, when calculate total cost, then sum is returned")
     @Test
     void test0() throws Exception {
diff --git a/ddd/src/test/java/com/baeldung/ddd/order/jpa/ViolateOrderBusinessRulesTest.java b/ddd/src/test/java/com/baeldung/ddd/order/jpa/ViolateOrderBusinessRulesUnitTest.java
similarity index 96%
rename from ddd/src/test/java/com/baeldung/ddd/order/jpa/ViolateOrderBusinessRulesTest.java
rename to ddd/src/test/java/com/baeldung/ddd/order/jpa/ViolateOrderBusinessRulesUnitTest.java
index 3eda9250f947..6f1de3276cd3 100644
--- a/ddd/src/test/java/com/baeldung/ddd/order/jpa/ViolateOrderBusinessRulesTest.java
+++ b/ddd/src/test/java/com/baeldung/ddd/order/jpa/ViolateOrderBusinessRulesUnitTest.java
@@ -7,7 +7,7 @@
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 
-public class ViolateOrderBusinessRulesTest {
+public class ViolateOrderBusinessRulesUnitTest {
     @DisplayName("given two non-zero order line items, when create an order with them, it's possible to set total cost to zero")
     @Test
     void test() throws Exception {
diff --git a/guest/remote-debugging/pom.xml b/guest/remote-debugging/pom.xml
index 07b9cc49d875..5c6a2b31652d 100644
--- a/guest/remote-debugging/pom.xml
+++ b/guest/remote-debugging/pom.xml
@@ -9,10 +9,10 @@
     <packaging>war</packaging>
 
     <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>1.5.8.RELEASE</version>
-        <relativePath /> <!-- lookup parent from repository -->
+        <artifactId>parent-boot-1</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-boot-1</relativePath>
     </parent>
 
     <dependencies>
@@ -39,6 +39,7 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+        <spring-boot.version>1.5.8.RELEASE</spring-boot.version>
     </properties>
 
 </project>
diff --git a/guest/slf4j/guide/pom.xml b/guest/slf4j/guide/pom.xml
index 657ede73b609..b69efee32a54 100644
--- a/guest/slf4j/guide/pom.xml
+++ b/guest/slf4j/guide/pom.xml
@@ -9,9 +9,10 @@
     <packaging>pom</packaging>
 
     <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.0.6.RELEASE</version>
+        <artifactId>parent-boot-2</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../../parent-boot-2</relativePath>
     </parent>
 
     <modules>
@@ -59,5 +60,6 @@
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <java.version>1.8</java.version>
         <powermock.version>2.0.0-beta.5</powermock.version>
+        <spring-boot.version>2.0.6.RELEASE</spring-boot.version>
     </properties>
 </project>
diff --git a/guest/spring-boot-app/pom.xml b/guest/spring-boot-app/pom.xml
index 423dadbb9963..ab3181b676a3 100644
--- a/guest/spring-boot-app/pom.xml
+++ b/guest/spring-boot-app/pom.xml
@@ -8,9 +8,10 @@
     <packaging>war</packaging>
 
     <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>1.5.3.RELEASE</version>
+        <artifactId>parent-boot-1</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-boot-1</relativePath>
     </parent>
 
     <dependencies>
@@ -70,6 +71,7 @@
         <tomcat.version>8.0.43</tomcat.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <java.version>1.8</java.version>
+        <spring-boot.version>1.5.3.RELEASE</spring-boot.version>
     </properties>
 
 </project>
diff --git a/guest/spring-boot-app/src/test/java/com/stackify/test/EmployeeControllerTest.java b/guest/spring-boot-app/src/test/java/com/stackify/test/EmployeeControllerUnitTest.java
similarity index 97%
rename from guest/spring-boot-app/src/test/java/com/stackify/test/EmployeeControllerTest.java
rename to guest/spring-boot-app/src/test/java/com/stackify/test/EmployeeControllerUnitTest.java
index 2711a77ebdae..9808546e82e7 100644
--- a/guest/spring-boot-app/src/test/java/com/stackify/test/EmployeeControllerTest.java
+++ b/guest/spring-boot-app/src/test/java/com/stackify/test/EmployeeControllerUnitTest.java
@@ -21,7 +21,7 @@
 @RunWith(SpringRunner.class)
 @SpringBootTest(classes = Application.class)
 @WebAppConfiguration
-public class EmployeeControllerTest {
+public class EmployeeControllerUnitTest {
 
     private static final String CONTENT_TYPE = "application/json;charset=UTF-8";
 
diff --git a/guest/spring-mvc/pom.xml b/guest/spring-mvc/pom.xml
index 3bffb1530df1..b9d0899c77b9 100644
--- a/guest/spring-mvc/pom.xml
+++ b/guest/spring-mvc/pom.xml
@@ -10,10 +10,10 @@
     <description>Spring MVC sample project</description>
 
     <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.0.0.RELEASE</version>
-        <relativePath /> <!-- lookup parent from repository -->
+        <artifactId>parent-boot-2</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-boot-2</relativePath>
     </parent>
 
     <dependencies>
@@ -30,6 +30,7 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+        <spring-boot.version>2.0.0.RELEASE</spring-boot.version>
     </properties>
 
 </project>
diff --git a/guest/spring-security/pom.xml b/guest/spring-security/pom.xml
index 8be42ba32b15..d38be54114d4 100644
--- a/guest/spring-security/pom.xml
+++ b/guest/spring-security/pom.xml
@@ -9,10 +9,10 @@
     <description>Spring Security Sample Project</description>
 
     <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.0.0.RELEASE</version>
-        <relativePath />
+        <artifactId>parent-boot-2</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-boot-2</relativePath>
     </parent>
 
     <dependencies>
@@ -48,6 +48,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <thymeleaf-spring5.version>3.0.8.RELEASE</thymeleaf-spring5.version>
+        <spring-boot.version>2.0.0.RELEASE</spring-boot.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/guest/webservices/spring-rest-service/pom.xml b/guest/webservices/spring-rest-service/pom.xml
index fcec8a3e1212..8849b82a3e6e 100644
--- a/guest/webservices/spring-rest-service/pom.xml
+++ b/guest/webservices/spring-rest-service/pom.xml
@@ -8,9 +8,10 @@
     <packaging>war</packaging>
 
     <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>1.5.4.RELEASE</version>
+        <artifactId>parent-boot-1</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../../parent-boot-1</relativePath>
     </parent>
 
     <dependencies>
@@ -49,6 +50,7 @@
         <java.version>1.8</java.version>
         <springfox-swagger2.version>2.7.0</springfox-swagger2.version>
         <springfox-swagger-ui.version>2.7.0</springfox-swagger-ui.version>
+        <spring-boot.version>1.5.4.RELEASE</spring-boot.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/jta/pom.xml b/jta/pom.xml
index 038f1dc8d1e7..6a3173399618 100644
--- a/jta/pom.xml
+++ b/jta/pom.xml
@@ -10,10 +10,10 @@
     <description>JEE JTA demo</description>
 
     <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.0.4.RELEASE</version>
-        <relativePath/>
+        <artifactId>parent-boot-2</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../parent-boot-2</relativePath>
     </parent>
 
     <dependencies>
@@ -85,5 +85,6 @@
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <java.version>1.8</java.version>
 		<hsqldb.version>2.4.1</hsqldb.version>
+        <spring-boot.version>2.0.4.RELEASE</spring-boot.version>
     </properties>
 </project>
diff --git a/persistence-modules/spring-boot-h2/spring-boot-h2-database/pom.xml b/persistence-modules/spring-boot-h2/spring-boot-h2-database/pom.xml
index a181360e2b3d..882b88b5350e 100644
--- a/persistence-modules/spring-boot-h2/spring-boot-h2-database/pom.xml
+++ b/persistence-modules/spring-boot-h2/spring-boot-h2-database/pom.xml
@@ -11,10 +11,10 @@
     <description>Demo Spring Boot applications that starts H2 in memory database</description>
 
     <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.0.4.RELEASE</version>
-        <relativePath/> <!-- lookup parent from repository -->
+        <artifactId>parent-boot-2</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../../parent-boot-2</relativePath>
     </parent>
 
     <dependencies>
@@ -48,6 +48,7 @@
         <java.version>1.8</java.version>
         <!-- The main class to start by executing java -jar -->
         <start-class>com.baeldung.h2db.demo.server.SpringBootApp</start-class>
+        <spring-boot.version>2.0.4.RELEASE</spring-boot.version>
     </properties>
     	
 </project>
diff --git a/spring-5-reactive-oauth/pom.xml b/spring-5-reactive-oauth/pom.xml
index 86a5233ad4ff..ff076985e4cb 100644
--- a/spring-5-reactive-oauth/pom.xml
+++ b/spring-5-reactive-oauth/pom.xml
@@ -10,11 +10,11 @@
 	<description>WebFluc and Spring Security OAuth </description>
 
 	<parent>
-		<groupId>org.springframework.boot</groupId>
-		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.1.0.RELEASE</version>
-		<relativePath/> <!-- lookup parent from repository -->
-	</parent>
+        <artifactId>parent-boot-2</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../parent-boot-2</relativePath>
+    </parent>
 
 	<dependencies>
 		<dependency>
@@ -70,6 +70,7 @@
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 		<java.version>1.8</java.version>
+        <spring-boot.version>2.1.0.RELEASE</spring-boot.version>
 	</properties>
 
 </project>
diff --git a/spring-cloud/spring-cloud-functions/pom.xml b/spring-cloud/spring-cloud-functions/pom.xml
index 9396ad0a55cf..4d03e07e89bf 100644
--- a/spring-cloud/spring-cloud-functions/pom.xml
+++ b/spring-cloud/spring-cloud-functions/pom.xml
@@ -11,19 +11,12 @@
     <packaging>jar</packaging>
 
     <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.0.4.RELEASE</version>
-        <relativePath/>
+        <artifactId>parent-boot-2</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-boot-2</relativePath>
     </parent>
 
-    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-        <java.version>1.8</java.version>
-        <spring-cloud-function.version>1.0.1.RELEASE</spring-cloud-function.version>
-        <aws-lambda-events.version>2.0.2</aws-lambda-events.version>
-    </properties>
 
     <dependencies>
         <dependency>
@@ -89,4 +82,13 @@
         </plugins>
     </build>
 
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+        <java.version>1.8</java.version>
+        <spring-cloud-function.version>1.0.1.RELEASE</spring-cloud-function.version>
+        <aws-lambda-events.version>2.0.2</aws-lambda-events.version>
+        <spring-boot.version>2.0.4.RELEASE</spring-boot.version>
+    </properties>
+
 </project>
diff --git a/spring-cloud/spring-cloud-functions/src/test/java/com/baeldung/spring/cloudfunction/aws/CloudFunctionApplicationTests.java b/spring-cloud/spring-cloud-functions/src/test/java/com/baeldung/spring/cloudfunction/aws/CloudFunctionApplicationUnitTest.java
similarity index 96%
rename from spring-cloud/spring-cloud-functions/src/test/java/com/baeldung/spring/cloudfunction/aws/CloudFunctionApplicationTests.java
rename to spring-cloud/spring-cloud-functions/src/test/java/com/baeldung/spring/cloudfunction/aws/CloudFunctionApplicationUnitTest.java
index 6039debe3f9b..e7b3fc849886 100644
--- a/spring-cloud/spring-cloud-functions/src/test/java/com/baeldung/spring/cloudfunction/aws/CloudFunctionApplicationTests.java
+++ b/spring-cloud/spring-cloud-functions/src/test/java/com/baeldung/spring/cloudfunction/aws/CloudFunctionApplicationUnitTest.java
@@ -12,7 +12,7 @@
 
 @RunWith(SpringRunner.class)
 @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
-public class CloudFunctionApplicationTests {
+public class CloudFunctionApplicationUnitTest {
 
     @LocalServerPort
     private int port;
diff --git a/spring-cloud/spring-cloud-kubernetes/liveness-example/pom.xml b/spring-cloud/spring-cloud-kubernetes/liveness-example/pom.xml
index 9254718c81b1..b87f807391d4 100644
--- a/spring-cloud/spring-cloud-kubernetes/liveness-example/pom.xml
+++ b/spring-cloud/spring-cloud-kubernetes/liveness-example/pom.xml
@@ -7,10 +7,10 @@
     <version>1.0-SNAPSHOT</version>
 
     <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>1.5.17.RELEASE</version>
-        <relativePath/> <!-- lookup parent from repository -->
+        <artifactId>parent-boot-1</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../../parent-boot-1</relativePath>
     </parent>
 
     <dependencies>
@@ -44,6 +44,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <java.version>1.8</java.version>
+        <spring-boot.version>1.5.17.RELEASE</spring-boot.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/spring-cloud/spring-cloud-kubernetes/readiness-example/pom.xml b/spring-cloud/spring-cloud-kubernetes/readiness-example/pom.xml
index e22bb0a9fefe..42fa10934b84 100644
--- a/spring-cloud/spring-cloud-kubernetes/readiness-example/pom.xml
+++ b/spring-cloud/spring-cloud-kubernetes/readiness-example/pom.xml
@@ -7,10 +7,10 @@
     <version>1.0-SNAPSHOT</version>
 
     <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>1.5.17.RELEASE</version>
-        <relativePath/> <!-- lookup parent from repository -->
+        <artifactId>parent-boot-1</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../../parent-boot-1</relativePath>
     </parent>
 
     <dependencies>
@@ -44,6 +44,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <java.version>1.8</java.version>
+        <spring-boot.version>1.5.17.RELEASE</spring-boot.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/spring-cloud/spring-cloud-zuul/pom.xml b/spring-cloud/spring-cloud-zuul/pom.xml
index 97e67f16d8b4..08990357d629 100644
--- a/spring-cloud/spring-cloud-zuul/pom.xml
+++ b/spring-cloud/spring-cloud-zuul/pom.xml
@@ -10,11 +10,11 @@
 	<description>Demo project for Spring Boot</description>
 
 	<parent>
-		<groupId>org.springframework.boot</groupId>
-		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.0.6.RELEASE</version>
-		<relativePath/> <!-- lookup parent from repository -->
-	</parent>
+        <artifactId>parent-boot-2</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-boot-2</relativePath>
+    </parent>
 
 	<dependencies>
 		<dependency>
@@ -72,6 +72,7 @@
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 		<java.version>1.8</java.version>
 		<spring-cloud.version>Finchley.SR1</spring-cloud.version>
+        <spring-boot.version>2.0.6.RELEASE</spring-boot.version>
 	</properties>
 	
 </project>
diff --git a/spring-cloud/spring-cloud-zuul/src/test/java/com/baeldung/spring/cloud/zuulratelimitdemo/controller/GreetingControllerTest.java b/spring-cloud/spring-cloud-zuul/src/test/java/com/baeldung/spring/cloud/zuulratelimitdemo/controller/GreetingControllerUnitTest.java
similarity index 99%
rename from spring-cloud/spring-cloud-zuul/src/test/java/com/baeldung/spring/cloud/zuulratelimitdemo/controller/GreetingControllerTest.java
rename to spring-cloud/spring-cloud-zuul/src/test/java/com/baeldung/spring/cloud/zuulratelimitdemo/controller/GreetingControllerUnitTest.java
index d51f88111279..d23ec836f934 100644
--- a/spring-cloud/spring-cloud-zuul/src/test/java/com/baeldung/spring/cloud/zuulratelimitdemo/controller/GreetingControllerTest.java
+++ b/spring-cloud/spring-cloud-zuul/src/test/java/com/baeldung/spring/cloud/zuulratelimitdemo/controller/GreetingControllerUnitTest.java
@@ -26,7 +26,7 @@
 @AutoConfigureTestDatabase
 @RunWith(SpringRunner.class)
 @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
-public class GreetingControllerTest {
+public class GreetingControllerUnitTest {
 
     private static final String SIMPLE_GREETING = "/greeting/simple";
     private static final String ADVANCED_GREETING = "/greeting/advanced";