diff --git a/settings.gradle b/settings.gradle
index e8f633038cd..037cf5cc53b 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -116,6 +116,7 @@ include "spring-boot-project:spring-boot-parent"
 include "spring-boot-project:spring-boot-pulsar"
 include "spring-boot-project:spring-boot-quartz"
 include "spring-boot-project:spring-boot-r2dbc"
+include "spring-boot-project:spring-boot-reactor"
 include "spring-boot-project:spring-boot-reactor-netty"
 include "spring-boot-project:spring-boot-rsocket"
 include "spring-boot-project:spring-boot-security"
diff --git a/spring-boot-project/spring-boot-autoconfigure-all/src/main/resources/META-INF/additional-spring-configuration-metadata.json b/spring-boot-project/spring-boot-autoconfigure-all/src/main/resources/META-INF/additional-spring-configuration-metadata.json
index 74a1af5c9b1..4b11fff484d 100644
--- a/spring-boot-project/spring-boot-autoconfigure-all/src/main/resources/META-INF/additional-spring-configuration-metadata.json
+++ b/spring-boot-project/spring-boot-autoconfigure-all/src/main/resources/META-INF/additional-spring-configuration-metadata.json
@@ -239,14 +239,6 @@
         "reason": "Narayana support has moved to third party starter."
       }
     },
-    {
-      "name": "spring.reactor.stacktrace-mode.enabled",
-      "description": "Whether Reactor should collect stacktrace information at runtime.",
-      "defaultValue": false,
-      "deprecation": {
-        "replacement": "spring.reactor.debug-agent.enabled"
-      }
-    },
     {
       "name": "spring.resources.add-mappings",
       "type": "java.lang.Boolean",
diff --git a/spring-boot-project/spring-boot-autoconfigure-all/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports b/spring-boot-project/spring-boot-autoconfigure-all/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports
index df14dc16bf5..47017743bcf 100644
--- a/spring-boot-project/spring-boot-autoconfigure-all/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports
+++ b/spring-boot-project/spring-boot-autoconfigure-all/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports
@@ -5,7 +5,6 @@ org.springframework.boot.autoconfigure.http.client.service.HttpServiceClientAuto
 org.springframework.boot.autoconfigure.http.client.reactive.ClientHttpConnectorAutoConfiguration
 org.springframework.boot.autoconfigure.http.client.reactive.service.ReactiveHttpServiceClientAutoConfiguration
 org.springframework.boot.autoconfigure.netty.NettyAutoConfiguration
-org.springframework.boot.autoconfigure.reactor.ReactorAutoConfiguration
 org.springframework.boot.autoconfigure.web.client.RestClientAutoConfiguration
 org.springframework.boot.autoconfigure.web.client.RestTemplateAutoConfiguration
 org.springframework.boot.autoconfigure.web.reactive.function.client.ClientHttpConnectorAutoConfiguration
diff --git a/spring-boot-project/spring-boot-data-cassandra/build.gradle b/spring-boot-project/spring-boot-data-cassandra/build.gradle
index aa91f61b7a1..9e7502ea77e 100644
--- a/spring-boot-project/spring-boot-data-cassandra/build.gradle
+++ b/spring-boot-project/spring-boot-data-cassandra/build.gradle
@@ -33,7 +33,7 @@ dependencies {
 	}
 
 	optional(project(":spring-boot-project:spring-boot-autoconfigure"))
-	optional("io.projectreactor:reactor-core")
+	optional(project(":spring-boot-project:spring-boot-reactor"))
 
 	dockerTestImplementation(project(":spring-boot-project:spring-boot-test"))
 	dockerTestImplementation(project(":spring-boot-project:spring-boot-tools:spring-boot-test-support-docker"))
diff --git a/spring-boot-project/spring-boot-data-couchbase/build.gradle b/spring-boot-project/spring-boot-data-couchbase/build.gradle
index 84cb88440eb..4d869c83957 100644
--- a/spring-boot-project/spring-boot-data-couchbase/build.gradle
+++ b/spring-boot-project/spring-boot-data-couchbase/build.gradle
@@ -30,8 +30,8 @@ dependencies {
 	api("org.springframework.data:spring-data-couchbase")
 
 	optional(project(":spring-boot-project:spring-boot-autoconfigure"))
+	optional(project(":spring-boot-project:spring-boot-reactor"))
 	optional(project(":spring-boot-project:spring-boot-validation"))
-	optional("io.projectreactor:reactor-core")
 
 	testImplementation(project(":spring-boot-project:spring-boot-test"))
 	testImplementation(project(":spring-boot-project:spring-boot-tools:spring-boot-test-support"))
diff --git a/spring-boot-project/spring-boot-data-elasticsearch/build.gradle b/spring-boot-project/spring-boot-data-elasticsearch/build.gradle
index f73832d7922..ec2027ecbbc 100644
--- a/spring-boot-project/spring-boot-data-elasticsearch/build.gradle
+++ b/spring-boot-project/spring-boot-data-elasticsearch/build.gradle
@@ -31,7 +31,7 @@ dependencies {
 	api("org.springframework.data:spring-data-elasticsearch")
 
 	optional(project(":spring-boot-project:spring-boot-autoconfigure"))
-	optional("io.projectreactor:reactor-core")
+	optional(project(":spring-boot-project:spring-boot-reactor"))
 
 	dockerTestImplementation(project(":spring-boot-project:spring-boot-test"))
 	dockerTestImplementation(project(":spring-boot-project:spring-boot-tools:spring-boot-test-support-docker"))
diff --git a/spring-boot-project/spring-boot-data-mongodb/build.gradle b/spring-boot-project/spring-boot-data-mongodb/build.gradle
index e77bea2ed9a..903e267ad13 100644
--- a/spring-boot-project/spring-boot-data-mongodb/build.gradle
+++ b/spring-boot-project/spring-boot-data-mongodb/build.gradle
@@ -30,7 +30,7 @@ dependencies {
 	api("org.springframework.data:spring-data-mongodb")
 
 	optional(project(":spring-boot-project:spring-boot-autoconfigure"))
-	optional("io.projectreactor:reactor-core")
+	optional(project(":spring-boot-project:spring-boot-reactor"))
 	optional("org.mongodb:mongodb-driver-reactivestreams")
 	optional("org.mongodb:mongodb-driver-sync")
 
diff --git a/spring-boot-project/spring-boot-data-neo4j/build.gradle b/spring-boot-project/spring-boot-data-neo4j/build.gradle
index c44cc0b6391..4e2c12a4e8c 100644
--- a/spring-boot-project/spring-boot-data-neo4j/build.gradle
+++ b/spring-boot-project/spring-boot-data-neo4j/build.gradle
@@ -32,7 +32,7 @@ dependencies {
 	api("org.springframework.data:spring-data-neo4j")
 
 	optional(project(":spring-boot-project:spring-boot-autoconfigure"))
-	optional("io.projectreactor:reactor-core")
+	optional(project(":spring-boot-project:spring-boot-reactor"))
 
 	dockerTestImplementation(project(":spring-boot-project:spring-boot-test"))
 	dockerTestImplementation(project(":spring-boot-project:spring-boot-tools:spring-boot-test-support-docker"))
diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index 2bba9bf2fc3..860ed0e49c0 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -2045,6 +2045,7 @@ bom {
 				"spring-boot-pulsar",
 				"spring-boot-quartz",
 				"spring-boot-r2dbc",
+				"spring-boot-reactor",
 				"spring-boot-reactor-netty",
 				"spring-boot-rsocket",
 				"spring-boot-security",
diff --git a/spring-boot-project/spring-boot-devtools/build.gradle b/spring-boot-project/spring-boot-devtools/build.gradle
index 0da0794f855..7f5cbcd6693 100644
--- a/spring-boot-project/spring-boot-devtools/build.gradle
+++ b/spring-boot-project/spring-boot-devtools/build.gradle
@@ -55,8 +55,8 @@ dependencies {
 	optional(project(":spring-boot-project:spring-boot-jdbc"))
 	optional(project(":spring-boot-project:spring-boot-jpa"))
 	optional(project(":spring-boot-project:spring-boot-r2dbc"))
+	optional(project(":spring-boot-project:spring-boot-reactor"))
 	optional(project(":spring-boot-project:spring-boot-security"))
-	optional("io.projectreactor:reactor-core")
 	optional("io.r2dbc:r2dbc-spi")
 	optional("jakarta.servlet:jakarta.servlet-api")
 	optional("org.apache.derby:derbytools")
diff --git a/spring-boot-project/spring-boot-docs/build.gradle b/spring-boot-project/spring-boot-docs/build.gradle
index 4027f48f668..a2fdc9ca724 100644
--- a/spring-boot-project/spring-boot-docs/build.gradle
+++ b/spring-boot-project/spring-boot-docs/build.gradle
@@ -127,6 +127,7 @@ dependencies {
 	autoConfiguration(project(path: ":spring-boot-project:spring-boot-pulsar", configuration: "autoConfigurationMetadata"))
 	autoConfiguration(project(path: ":spring-boot-project:spring-boot-quartz", configuration: "autoConfigurationMetadata"))
 	autoConfiguration(project(path: ":spring-boot-project:spring-boot-r2dbc", configuration: "autoConfigurationMetadata"))
+	autoConfiguration(project(path: ":spring-boot-project:spring-boot-reactor", configuration: "autoConfigurationMetadata"))
 	autoConfiguration(project(path: ":spring-boot-project:spring-boot-reactor-netty", configuration: "autoConfigurationMetadata"))
 	autoConfiguration(project(path: ":spring-boot-project:spring-boot-rsocket", configuration: "autoConfigurationMetadata"))
 	autoConfiguration(project(path: ":spring-boot-project:spring-boot-security", configuration: "autoConfigurationMetadata"))
@@ -203,6 +204,7 @@ dependencies {
 	configurationProperties(project(path: ":spring-boot-project:spring-boot-pulsar", configuration: "configurationPropertiesMetadata"))
 	configurationProperties(project(path: ":spring-boot-project:spring-boot-quartz", configuration: "configurationPropertiesMetadata"))
 	configurationProperties(project(path: ":spring-boot-project:spring-boot-r2dbc", configuration: "configurationPropertiesMetadata"))
+	configurationProperties(project(path: ":spring-boot-project:spring-boot-reactor", configuration: "configurationPropertiesMetadata"))
 	configurationProperties(project(path: ":spring-boot-project:spring-boot-reactor-netty", configuration: "configurationPropertiesMetadata"))
 	configurationProperties(project(path: ":spring-boot-project:spring-boot-rsocket", configuration: "configurationPropertiesMetadata"))
 	configurationProperties(project(path: ":spring-boot-project:spring-boot-security", configuration: "configurationPropertiesMetadata"))
diff --git a/spring-boot-project/spring-boot-elasticsearch/build.gradle b/spring-boot-project/spring-boot-elasticsearch/build.gradle
index 0a6cc909b54..e0d32ef5bf8 100644
--- a/spring-boot-project/spring-boot-elasticsearch/build.gradle
+++ b/spring-boot-project/spring-boot-elasticsearch/build.gradle
@@ -32,6 +32,7 @@ dependencies {
 
 	optional(project(":spring-boot-project:spring-boot-autoconfigure"))
 	optional(project(":spring-boot-project:spring-boot-jsonb"))
+	optional(project(":spring-boot-project:spring-boot-reactor"))
 	optional("co.elastic.clients:elasticsearch-java") {
 		exclude group: "commons-logging", module: "commons-logging"
 	}
@@ -43,7 +44,6 @@ dependencies {
 	optional("org.springframework.data:spring-data-elasticsearch") {
 		exclude group: "org.elasticsearch.client", module: "transport"
 	}
-	optional("io.projectreactor:reactor-core")
 
 	dockerTestImplementation(project(":spring-boot-project:spring-boot-test"))
 	dockerTestImplementation(project(":spring-boot-project:spring-boot-tools:spring-boot-test-support-docker"))
diff --git a/spring-boot-project/spring-boot-mongodb/build.gradle b/spring-boot-project/spring-boot-mongodb/build.gradle
index 7fc232a2b2a..f939a4884fb 100644
--- a/spring-boot-project/spring-boot-mongodb/build.gradle
+++ b/spring-boot-project/spring-boot-mongodb/build.gradle
@@ -29,8 +29,8 @@ dependencies {
 	api(project(":spring-boot-project:spring-boot"))
 
 	optional(project(":spring-boot-project:spring-boot-autoconfigure"))
+	optional(project(":spring-boot-project:spring-boot-reactor"))
 	optional("io.netty:netty-transport")
-	optional("io.projectreactor:reactor-core")
 	optional("org.mongodb:mongodb-driver-reactivestreams")
 	optional("org.mongodb:mongodb-driver-sync")
 
diff --git a/spring-boot-project/spring-boot-reactor/build.gradle b/spring-boot-project/spring-boot-reactor/build.gradle
new file mode 100644
index 00000000000..1226ebe66ab
--- /dev/null
+++ b/spring-boot-project/spring-boot-reactor/build.gradle
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2012-present the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the License);
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+plugins {
+	id "java-library"
+	id "org.springframework.boot.auto-configuration"
+	id "org.springframework.boot.configuration-properties"
+	id "org.springframework.boot.deployed"
+	id "org.springframework.boot.optional-dependencies"
+}
+
+description = "Spring Boot Reactor"
+
+dependencies {
+	api(project(":spring-boot-project:spring-boot"))
+	api("io.projectreactor:reactor-core")
+
+	optional(project(":spring-boot-project:spring-boot-autoconfigure"))
+
+	testImplementation(project(":spring-boot-project:spring-boot-test"))
+	testImplementation(project(":spring-boot-project:spring-boot-tools:spring-boot-test-support"))
+	testImplementation("io.micrometer:context-propagation")
+
+	testRuntimeOnly("ch.qos.logback:logback-classic")
+}
diff --git a/spring-boot-project/spring-boot-all/src/main/java/org/springframework/boot/reactor/ReactorEnvironmentPostProcessor.java b/spring-boot-project/spring-boot-reactor/src/main/java/org/springframework/boot/reactor/ReactorEnvironmentPostProcessor.java
similarity index 100%
rename from spring-boot-project/spring-boot-all/src/main/java/org/springframework/boot/reactor/ReactorEnvironmentPostProcessor.java
rename to spring-boot-project/spring-boot-reactor/src/main/java/org/springframework/boot/reactor/ReactorEnvironmentPostProcessor.java
diff --git a/spring-boot-project/spring-boot-autoconfigure-all/src/main/java/org/springframework/boot/autoconfigure/reactor/ReactorAutoConfiguration.java b/spring-boot-project/spring-boot-reactor/src/main/java/org/springframework/boot/reactor/autoconfigure/ReactorAutoConfiguration.java
similarity index 96%
rename from spring-boot-project/spring-boot-autoconfigure-all/src/main/java/org/springframework/boot/autoconfigure/reactor/ReactorAutoConfiguration.java
rename to spring-boot-project/spring-boot-reactor/src/main/java/org/springframework/boot/reactor/autoconfigure/ReactorAutoConfiguration.java
index 5dee07477d3..2e521c97516 100644
--- a/spring-boot-project/spring-boot-autoconfigure-all/src/main/java/org/springframework/boot/autoconfigure/reactor/ReactorAutoConfiguration.java
+++ b/spring-boot-project/spring-boot-reactor/src/main/java/org/springframework/boot/reactor/autoconfigure/ReactorAutoConfiguration.java
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package org.springframework.boot.autoconfigure.reactor;
+package org.springframework.boot.reactor.autoconfigure;
 
 import reactor.core.publisher.Hooks;
 
@@ -29,7 +29,7 @@ import org.springframework.context.annotation.Bean;
  * {@link EnableAutoConfiguration Auto-configuration} for Reactor.
  *
  * @author Brian Clozel
- * @since 3.2.0
+ * @since 4.0.0
  */
 @AutoConfiguration
 @ConditionalOnClass(Hooks.class)
diff --git a/spring-boot-project/spring-boot-autoconfigure-all/src/main/java/org/springframework/boot/autoconfigure/reactor/ReactorProperties.java b/spring-boot-project/spring-boot-reactor/src/main/java/org/springframework/boot/reactor/autoconfigure/ReactorProperties.java
similarity index 95%
rename from spring-boot-project/spring-boot-autoconfigure-all/src/main/java/org/springframework/boot/autoconfigure/reactor/ReactorProperties.java
rename to spring-boot-project/spring-boot-reactor/src/main/java/org/springframework/boot/reactor/autoconfigure/ReactorProperties.java
index da7f7ef0c13..5a486274c11 100644
--- a/spring-boot-project/spring-boot-autoconfigure-all/src/main/java/org/springframework/boot/autoconfigure/reactor/ReactorProperties.java
+++ b/spring-boot-project/spring-boot-reactor/src/main/java/org/springframework/boot/reactor/autoconfigure/ReactorProperties.java
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package org.springframework.boot.autoconfigure.reactor;
+package org.springframework.boot.reactor.autoconfigure;
 
 import org.springframework.boot.context.properties.ConfigurationProperties;
 
@@ -22,7 +22,7 @@ import org.springframework.boot.context.properties.ConfigurationProperties;
  * Configuration properties for Reactor.
  *
  * @author Brian Clozel
- * @since 3.2.0
+ * @since 4.0.0
  */
 @ConfigurationProperties("spring.reactor")
 public class ReactorProperties {
diff --git a/spring-boot-project/spring-boot-autoconfigure-all/src/main/java/org/springframework/boot/autoconfigure/reactor/package-info.java b/spring-boot-project/spring-boot-reactor/src/main/java/org/springframework/boot/reactor/autoconfigure/package-info.java
similarity index 92%
rename from spring-boot-project/spring-boot-autoconfigure-all/src/main/java/org/springframework/boot/autoconfigure/reactor/package-info.java
rename to spring-boot-project/spring-boot-reactor/src/main/java/org/springframework/boot/reactor/autoconfigure/package-info.java
index c5bf612c88b..18547b63a5f 100644
--- a/spring-boot-project/spring-boot-autoconfigure-all/src/main/java/org/springframework/boot/autoconfigure/reactor/package-info.java
+++ b/spring-boot-project/spring-boot-reactor/src/main/java/org/springframework/boot/reactor/autoconfigure/package-info.java
@@ -17,4 +17,4 @@
 /**
  * Auto-configuration for Reactor.
  */
-package org.springframework.boot.autoconfigure.reactor;
+package org.springframework.boot.reactor.autoconfigure;
diff --git a/spring-boot-project/spring-boot-all/src/main/java/org/springframework/boot/reactor/package-info.java b/spring-boot-project/spring-boot-reactor/src/main/java/org/springframework/boot/reactor/package-info.java
similarity index 100%
rename from spring-boot-project/spring-boot-all/src/main/java/org/springframework/boot/reactor/package-info.java
rename to spring-boot-project/spring-boot-reactor/src/main/java/org/springframework/boot/reactor/package-info.java
diff --git a/spring-boot-project/spring-boot-reactor/src/main/resources/META-INF/additional-spring-configuration-metadata.json b/spring-boot-project/spring-boot-reactor/src/main/resources/META-INF/additional-spring-configuration-metadata.json
new file mode 100644
index 00000000000..437f81bd634
--- /dev/null
+++ b/spring-boot-project/spring-boot-reactor/src/main/resources/META-INF/additional-spring-configuration-metadata.json
@@ -0,0 +1,13 @@
+{
+  "groups": [],
+  "properties": [
+      {
+      "name": "spring.reactor.stacktrace-mode.enabled",
+      "description": "Whether Reactor should collect stacktrace information at runtime.",
+      "defaultValue": false,
+      "deprecation": {
+        "replacement": "spring.reactor.debug-agent.enabled"
+      }
+    }
+  ]
+}
diff --git a/spring-boot-project/spring-boot-all/src/main/resources/META-INF/spring.factories b/spring-boot-project/spring-boot-reactor/src/main/resources/META-INF/spring.factories
similarity index 100%
rename from spring-boot-project/spring-boot-all/src/main/resources/META-INF/spring.factories
rename to spring-boot-project/spring-boot-reactor/src/main/resources/META-INF/spring.factories
diff --git a/spring-boot-project/spring-boot-reactor/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports b/spring-boot-project/spring-boot-reactor/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports
new file mode 100644
index 00000000000..5fc9bd47c37
--- /dev/null
+++ b/spring-boot-project/spring-boot-reactor/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports
@@ -0,0 +1 @@
+org.springframework.boot.reactor.autoconfigure.ReactorAutoConfiguration
diff --git a/spring-boot-project/spring-boot-all/src/test/java/org/springframework/boot/reactor/InstrumentedFluxProvider.java b/spring-boot-project/spring-boot-reactor/src/test/java/org/springframework/boot/reactor/InstrumentedFluxProvider.java
similarity index 100%
rename from spring-boot-project/spring-boot-all/src/test/java/org/springframework/boot/reactor/InstrumentedFluxProvider.java
rename to spring-boot-project/spring-boot-reactor/src/test/java/org/springframework/boot/reactor/InstrumentedFluxProvider.java
diff --git a/spring-boot-project/spring-boot-all/src/test/java/org/springframework/boot/reactor/ReactorEnvironmentPostProcessorTests.java b/spring-boot-project/spring-boot-reactor/src/test/java/org/springframework/boot/reactor/ReactorEnvironmentPostProcessorTests.java
similarity index 100%
rename from spring-boot-project/spring-boot-all/src/test/java/org/springframework/boot/reactor/ReactorEnvironmentPostProcessorTests.java
rename to spring-boot-project/spring-boot-reactor/src/test/java/org/springframework/boot/reactor/ReactorEnvironmentPostProcessorTests.java
diff --git a/spring-boot-project/spring-boot-autoconfigure-all/src/test/java/org/springframework/boot/autoconfigure/reactor/ReactorAutoConfigurationTests.java b/spring-boot-project/spring-boot-reactor/src/test/java/org/springframework/boot/reactor/autoconfigure/ReactorAutoConfigurationTests.java
similarity index 98%
rename from spring-boot-project/spring-boot-autoconfigure-all/src/test/java/org/springframework/boot/autoconfigure/reactor/ReactorAutoConfigurationTests.java
rename to spring-boot-project/spring-boot-reactor/src/test/java/org/springframework/boot/reactor/autoconfigure/ReactorAutoConfigurationTests.java
index f3990110fb4..7e4a5d00a36 100644
--- a/spring-boot-project/spring-boot-autoconfigure-all/src/test/java/org/springframework/boot/autoconfigure/reactor/ReactorAutoConfigurationTests.java
+++ b/spring-boot-project/spring-boot-reactor/src/test/java/org/springframework/boot/reactor/autoconfigure/ReactorAutoConfigurationTests.java
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package org.springframework.boot.autoconfigure.reactor;
+package org.springframework.boot.reactor.autoconfigure;
 
 import java.util.concurrent.atomic.AtomicReference;
 
diff --git a/spring-boot-project/spring-boot-security-oauth2-client/build.gradle b/spring-boot-project/spring-boot-security-oauth2-client/build.gradle
index a67ddae71b5..0d82d30cad9 100644
--- a/spring-boot-project/spring-boot-security-oauth2-client/build.gradle
+++ b/spring-boot-project/spring-boot-security-oauth2-client/build.gradle
@@ -32,7 +32,7 @@ dependencies {
 	implementation(project(":spring-boot-project:spring-boot-security"))
 
 	optional(project(":spring-boot-project:spring-boot-autoconfigure"))
-	optional("io.projectreactor:reactor-core")
+	optional(project(":spring-boot-project:spring-boot-reactor"))
 
 	testImplementation(project(":spring-boot-project:spring-boot-test"))
 	testImplementation(project(":spring-boot-project:spring-boot-tomcat"))
diff --git a/spring-boot-project/spring-boot-security-oauth2-resource-server/build.gradle b/spring-boot-project/spring-boot-security-oauth2-resource-server/build.gradle
index a27e4321ebd..c945b8f52d5 100644
--- a/spring-boot-project/spring-boot-security-oauth2-resource-server/build.gradle
+++ b/spring-boot-project/spring-boot-security-oauth2-resource-server/build.gradle
@@ -33,7 +33,7 @@ dependencies {
 	implementation(project(":spring-boot-project:spring-boot-security"))
 
 	optional(project(":spring-boot-project:spring-boot-autoconfigure"))
-	optional("io.projectreactor:reactor-core")
+	optional(project(":spring-boot-project:spring-boot-reactor"))
 	optional("jakarta.servlet:jakarta.servlet-api")
 
 	testImplementation(project(":spring-boot-project:spring-boot-test"))
diff --git a/spring-boot-project/spring-boot-security/build.gradle b/spring-boot-project/spring-boot-security/build.gradle
index 4457eaec9c9..b59a0890429 100644
--- a/spring-boot-project/spring-boot-security/build.gradle
+++ b/spring-boot-project/spring-boot-security/build.gradle
@@ -40,10 +40,10 @@ dependencies {
 
 	optional(project(":spring-boot-project:spring-boot-autoconfigure"))
 	optional(project(":spring-boot-project:spring-boot-h2console"))
+	optional(project(":spring-boot-project:spring-boot-reactor"))
 	optional(project(":spring-boot-project:spring-boot-rsocket"))
 	optional(project(":spring-boot-project:spring-boot-webmvc"))
 	optional("jakarta.servlet:jakarta.servlet-api")
-	optional("io.projectreactor:reactor-core")
 	optional("org.springframework:spring-messaging")
 	optional("org.springframework:spring-webflux")
 	optional("org.springframework.security:spring-security-data")
diff --git a/spring-boot-project/spring-boot-session/build.gradle b/spring-boot-project/spring-boot-session/build.gradle
index 02cd7087ee5..103a15aeac6 100644
--- a/spring-boot-project/spring-boot-session/build.gradle
+++ b/spring-boot-project/spring-boot-session/build.gradle
@@ -34,6 +34,7 @@ dependencies {
 	optional("jakarta.servlet:jakarta.servlet-api")
 	optional("org.springframework.security:spring-security-web")
 
+	testFixturesImplementation(project(":spring-boot-project:spring-boot-reactor"))
 	testFixturesImplementation(project(":spring-boot-project:spring-boot-test"))
 	testFixturesImplementation(project(":spring-boot-project:spring-boot-tools:spring-boot-test-support"))
 	testFixturesImplementation(testFixtures(project(":spring-boot-project:spring-boot")))
diff --git a/spring-boot-project/spring-boot-starters/spring-boot-starter-data-cassandra-reactive/build.gradle b/spring-boot-project/spring-boot-starters/spring-boot-starter-data-cassandra-reactive/build.gradle
index 1b9a0cd1853..9bd399803c1 100644
--- a/spring-boot-project/spring-boot-starters/spring-boot-starter-data-cassandra-reactive/build.gradle
+++ b/spring-boot-project/spring-boot-starters/spring-boot-starter-data-cassandra-reactive/build.gradle
@@ -21,8 +21,8 @@ plugins {
 description = "Starter for using Cassandra distributed database and Spring Data Cassandra Reactive"
 
 dependencies {
-	api(project(":spring-boot-project:spring-boot-starters:spring-boot-starter"))
 	api(project(":spring-boot-project:spring-boot-data-cassandra"))
+	api(project(":spring-boot-project:spring-boot-reactor"))
+	api(project(":spring-boot-project:spring-boot-starters:spring-boot-starter"))
 	api(project(":spring-boot-project:spring-boot-tx"))
-	api("io.projectreactor:reactor-core")
 }
diff --git a/spring-boot-project/spring-boot-starters/spring-boot-starter-data-couchbase-reactive/build.gradle b/spring-boot-project/spring-boot-starters/spring-boot-starter-data-couchbase-reactive/build.gradle
index ddbbc4a914a..507dbab02b7 100644
--- a/spring-boot-project/spring-boot-starters/spring-boot-starter-data-couchbase-reactive/build.gradle
+++ b/spring-boot-project/spring-boot-starters/spring-boot-starter-data-couchbase-reactive/build.gradle
@@ -21,8 +21,8 @@ plugins {
 description = "Starter for using Couchbase document-oriented database and Spring Data Couchbase Reactive"
 
 dependencies {
-	api(project(":spring-boot-project:spring-boot-starters:spring-boot-starter"))
 	api(project(":spring-boot-project:spring-boot-data-couchbase"))
+	api(project(":spring-boot-project:spring-boot-reactor"))
+	api(project(":spring-boot-project:spring-boot-starters:spring-boot-starter"))
 	api(project(":spring-boot-project:spring-boot-tx"))
-	api("io.projectreactor:reactor-core")
 }
diff --git a/spring-boot-project/spring-boot-starters/spring-boot-starter-data-mongodb-reactive/build.gradle b/spring-boot-project/spring-boot-starters/spring-boot-starter-data-mongodb-reactive/build.gradle
index e03915eeec1..657a3c44e5d 100644
--- a/spring-boot-project/spring-boot-starters/spring-boot-starter-data-mongodb-reactive/build.gradle
+++ b/spring-boot-project/spring-boot-starters/spring-boot-starter-data-mongodb-reactive/build.gradle
@@ -22,8 +22,8 @@ description = "Starter for using MongoDB document-oriented database and Spring D
 
 dependencies {
 	api(project(":spring-boot-project:spring-boot-data-mongodb"))
+	api(project(":spring-boot-project:spring-boot-reactor"))
 	api(project(":spring-boot-project:spring-boot-starters:spring-boot-starter"))
 	api(project(":spring-boot-project:spring-boot-tx"))
-	api("io.projectreactor:reactor-core")
 	api("org.mongodb:mongodb-driver-reactivestreams")
 }
diff --git a/spring-boot-project/spring-boot-starters/spring-boot-starter-data-redis-reactive/build.gradle b/spring-boot-project/spring-boot-starters/spring-boot-starter-data-redis-reactive/build.gradle
index bb8e91aa31e..fd0fd746061 100644
--- a/spring-boot-project/spring-boot-starters/spring-boot-starter-data-redis-reactive/build.gradle
+++ b/spring-boot-project/spring-boot-starters/spring-boot-starter-data-redis-reactive/build.gradle
@@ -21,8 +21,8 @@ plugins {
 description = "Starter for using Redis key-value data store with Spring Data Redis reactive and the Lettuce client"
 
 dependencies {
-	api(project(":spring-boot-project:spring-boot-starters:spring-boot-starter"))
 	api(project(":spring-boot-project:spring-boot-data-redis"))
+	api(project(":spring-boot-project:spring-boot-reactor"))
+	api(project(":spring-boot-project:spring-boot-starters:spring-boot-starter"))
 	api(project(":spring-boot-project:spring-boot-tx"))
-	api("io.projectreactor:reactor-core")
 }
diff --git a/spring-boot-project/spring-boot-test-autoconfigure/build.gradle b/spring-boot-project/spring-boot-test-autoconfigure/build.gradle
index 3065fca9f0f..5a90f840c93 100644
--- a/spring-boot-project/spring-boot-test-autoconfigure/build.gradle
+++ b/spring-boot-project/spring-boot-test-autoconfigure/build.gradle
@@ -142,6 +142,7 @@ dependencies {
 	testImplementation(project(":spring-boot-project:spring-boot-freemarker"))
 	testImplementation(project(":spring-boot-project:spring-boot-gson"))
 	testImplementation(project(":spring-boot-project:spring-boot-mustache"))
+	testImplementation(project(":spring-boot-project:spring-boot-reactor"))
 	testImplementation(project(":spring-boot-project:spring-boot-testcontainers"))
 	testImplementation(project(":spring-boot-project:spring-boot-thymeleaf"))
 	testImplementation(project(":spring-boot-project:spring-boot-tools:spring-boot-test-support"))
@@ -152,7 +153,6 @@ dependencies {
 	testImplementation("io.lettuce:lettuce-core")
 	testImplementation("io.micrometer:micrometer-registry-prometheus")
 	testImplementation("io.projectreactor.netty:reactor-netty-http")
-	testImplementation("io.projectreactor:reactor-core")
 	testImplementation("io.projectreactor:reactor-test")
 	testImplementation("io.r2dbc:r2dbc-h2")
 	testImplementation("jakarta.json:jakarta.json-api")
diff --git a/spring-boot-project/spring-boot-tx/build.gradle b/spring-boot-project/spring-boot-tx/build.gradle
index 41a8d36dcb4..66bf8d01f2b 100644
--- a/spring-boot-project/spring-boot-tx/build.gradle
+++ b/spring-boot-project/spring-boot-tx/build.gradle
@@ -41,5 +41,5 @@ dependencies {
 	testImplementation("org.springframework:spring-jdbc")
 
 	testRuntimeOnly("ch.qos.logback:logback-classic")
-	testRuntimeOnly("io.projectreactor:reactor-core")
+	testRuntimeOnly(project(":spring-boot-project:spring-boot-reactor"))
 }
diff --git a/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-data-couchbase/build.gradle b/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-data-couchbase/build.gradle
index 6b608c657a6..46ba34d5f47 100644
--- a/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-data-couchbase/build.gradle
+++ b/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-data-couchbase/build.gradle
@@ -22,11 +22,11 @@ plugins {
 description = "Spring Boot Data Couchbase smoke test"
 
 dependencies {
-	dockerTestImplementation(project(":spring-boot-project:spring-boot-test"))
+	dockerTestImplementation(project(":spring-boot-project:spring-boot-reactor"))
 	dockerTestImplementation(project(":spring-boot-project:spring-boot-starters:spring-boot-starter-test"))
-	dockerTestImplementation(project(":spring-boot-project:spring-boot-tools:spring-boot-test-support-docker"))
+	dockerTestImplementation(project(":spring-boot-project:spring-boot-test"))
 	dockerTestImplementation(project(":spring-boot-project:spring-boot-testcontainers"))
-	dockerTestImplementation("io.projectreactor:reactor-core")
+	dockerTestImplementation(project(":spring-boot-project:spring-boot-tools:spring-boot-test-support-docker"))
 	dockerTestImplementation("io.projectreactor:reactor-test")
 	dockerTestImplementation("org.apache.httpcomponents.client5:httpclient5")
 	dockerTestImplementation("org.junit.jupiter:junit-jupiter")
diff --git a/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-data-mongo/build.gradle b/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-data-mongo/build.gradle
index 4e8fa921993..e15d8387d31 100644
--- a/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-data-mongo/build.gradle
+++ b/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-data-mongo/build.gradle
@@ -34,7 +34,7 @@ dependencies {
 	dockerTestImplementation("org.testcontainers:mongodb")
 	dockerTestImplementation("org.testcontainers:testcontainers")
 
+	implementation(project(":spring-boot-project:spring-boot-reactor"))
 	implementation(project(":spring-boot-project:spring-boot-starters:spring-boot-starter-data-mongodb"))
 	implementation(project(":spring-boot-project:spring-boot-starters:spring-boot-starter-data-mongodb-reactive"))
-	implementation("io.projectreactor:reactor-core")
 }
\ No newline at end of file
diff --git a/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-data-redis/build.gradle b/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-data-redis/build.gradle
index f425c9feb40..71b8b513b63 100644
--- a/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-data-redis/build.gradle
+++ b/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-data-redis/build.gradle
@@ -22,12 +22,12 @@ plugins {
 description = "Spring Boot Data Redis smoke test"
 
 dependencies {
-	dockerTestImplementation(project(":spring-boot-project:spring-boot-test"))
+	dockerTestImplementation(project(":spring-boot-project:spring-boot-reactor"))
 	dockerTestImplementation(project(":spring-boot-project:spring-boot-starters:spring-boot-starter-test"))
+	dockerTestImplementation(project(":spring-boot-project:spring-boot-test"))
 	dockerTestImplementation(project(":spring-boot-project:spring-boot-testcontainers"))
 	dockerTestImplementation(project(":spring-boot-project:spring-boot-tools:spring-boot-test-support-docker"))
 	dockerTestImplementation("com.redis:testcontainers-redis")
-	dockerTestImplementation("io.projectreactor:reactor-core")
 	dockerTestImplementation("io.projectreactor:reactor-test")
 	dockerTestImplementation("org.junit.jupiter:junit-jupiter")
 	dockerTestImplementation("org.junit.platform:junit-platform-engine")