diff --git a/.github/workflows/cicd-dev.yml b/.github/workflows/cicd-dev.yml
index 9fa58f5..dd84dc8 100644
--- a/.github/workflows/cicd-dev.yml
+++ b/.github/workflows/cicd-dev.yml
@@ -43,7 +43,7 @@ jobs:
         with:
           username: ubuntu
           host: ${{ secrets.EC2_DEV_HOST }}
-          key: ${{ secrets.EC2_KEY }}
+          key: ${{ secrets.EC2_DEV_KEY }}
           port: ${{ secrets.EC2_PORT }}
           source: "./scripts/deploy.sh"
           target: "/home/ubuntu/"
@@ -53,7 +53,7 @@ jobs:
         with:
           username: ubuntu
           host: ${{ secrets.EC2_DEV_HOST }}
-          key: ${{ secrets.EC2_KEY }}
+          key: ${{ secrets.EC2_DEV_KEY }}
           port: ${{ secrets.EC2_PORT }}
           source: "./docker-compose.yml"
           target: "/home/ubuntu/"
@@ -71,7 +71,7 @@ jobs:
         with:
           username: ubuntu
           host: ${{ secrets.EC2_DEV_HOST }}
-          key: ${{ secrets.EC2_KEY }}
+          key: ${{ secrets.EC2_DEV_KEY }}
           script: |
             sudo docker pull ${{ secrets.DOCKER_USERNAME }}/${{ secrets.DOCKER_REPOSITORY }}
             chmod 777 ./scripts/deploy.sh
diff --git a/.github/workflows/cicd-prod.yml b/.github/workflows/cicd-prod.yml
index 248326b..63e46c9 100644
--- a/.github/workflows/cicd-prod.yml
+++ b/.github/workflows/cicd-prod.yml
@@ -43,7 +43,7 @@ jobs:
         with:
           username: ubuntu
           host: ${{ secrets.EC2_PROD_HOST }}
-          key: ${{ secrets.EC2_KEY }}
+          key: ${{ secrets.EC2_PROD_KEY }}
           port: ${{ secrets.EC2_PORT }}
           source: "./scripts/deploy.sh"
           target: "/home/ubuntu/"
@@ -53,7 +53,7 @@ jobs:
         with:
           username: ubuntu
           host: ${{ secrets.EC2_PROD_HOST }}
-          key: ${{ secrets.EC2_KEY }}
+          key: ${{ secrets.EC2_PROD_KEY }}
           port: ${{ secrets.EC2_PORT }}
           source: "./docker-compose.yml"
           target: "/home/ubuntu/"
@@ -71,7 +71,7 @@ jobs:
         with:
           username: ubuntu
           host: ${{ secrets.EC2_PROD_HOST }}
-          key: ${{ secrets.EC2_KEY }}
+          key: ${{ secrets.EC2_PROD_KEY }}
           script: |
             sudo docker pull ${{ secrets.DOCKER_USERNAME }}/${{ secrets.DOCKER_REPOSITORY }}
             chmod 777 ./scripts/deploy.sh
diff --git a/doorip-api/build.gradle b/doorip-api/build.gradle
index 73b4460..de4da41 100644
--- a/doorip-api/build.gradle
+++ b/doorip-api/build.gradle
@@ -14,6 +14,8 @@ dependencies {
     implementation project(path: ':doorip-domain')
     implementation project(path: ':doorip-external')
     implementation project(path: ':doorip-common')
+    implementation project(path: ':doorip-event-publisher')
+    implementation project(path: ':doorip-event-subscriber')
 }
 
 jar {
diff --git a/doorip-api/src/main/java/org/doorip/DooripApplication.java b/doorip-api/src/main/java/org/doorip/DooripApplication.java
index 6a59713..d81e403 100644
--- a/doorip-api/src/main/java/org/doorip/DooripApplication.java
+++ b/doorip-api/src/main/java/org/doorip/DooripApplication.java
@@ -3,9 +3,7 @@
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
-@SpringBootApplication(
-        scanBasePackageClasses = {DomainRoot.class, CommonRoot.class, ExternalRoot.class}
-)
+@SpringBootApplication
 public class DooripApplication {
     public static void main(String[] args) {
         SpringApplication.run(DooripApplication.class, args);
diff --git a/doorip-api/src/main/java/org/doorip/user/service/UserService.java b/doorip-api/src/main/java/org/doorip/user/service/UserService.java
index 36e55ff..828d13e 100644
--- a/doorip-api/src/main/java/org/doorip/user/service/UserService.java
+++ b/doorip-api/src/main/java/org/doorip/user/service/UserService.java
@@ -4,6 +4,7 @@
 import org.doorip.auth.jwt.JwtProvider;
 import org.doorip.auth.jwt.JwtValidator;
 import org.doorip.auth.jwt.Token;
+import org.doorip.event.SignUpEvent;
 import org.doorip.exception.ConflictException;
 import org.doorip.exception.EntityNotFoundException;
 import org.doorip.exception.InvalidValueException;
@@ -11,14 +12,10 @@
 import org.doorip.message.ErrorMessage;
 import org.doorip.message.EventMessage;
 import org.doorip.openfeign.apple.AppleOAuthProvider;
-import org.doorip.openfeign.discord.DiscordMessageProvider;
 import org.doorip.openfeign.kakao.KakaoOAuthProvider;
+import org.doorip.publisher.EventPublisher;
 import org.doorip.user.domain.*;
-import org.doorip.user.dto.request.ResultUpdateRequest;
-import org.doorip.user.dto.request.UserReissueRequest;
-import org.doorip.user.dto.request.UserSignInRequest;
-import org.doorip.user.dto.request.UserSignUpRequest;
-import org.doorip.user.dto.request.ProfileUpdateRequest;
+import org.doorip.user.dto.request.*;
 import org.doorip.user.dto.response.ProfileGetResponse;
 import org.doorip.user.dto.response.UserSignInResponse;
 import org.doorip.user.dto.response.UserSignUpResponse;
@@ -46,7 +43,7 @@ public class UserService {
     private final JwtValidator jwtValidator;
     private final AppleOAuthProvider appleOAuthProvider;
     private final KakaoOAuthProvider kakaoOAuthProvider;
-    private final DiscordMessageProvider discordMessageProvider;
+    private final EventPublisher eventPublisher;
 
     @Transactional(readOnly = true)
     public void splash(Long userId) {
@@ -71,7 +68,8 @@ public UserSignUpResponse signUp(String token, UserSignUpRequest request) {
         User savedUser = saveUser(request, platformId, enumPlatform);
         Token issueToken = jwtProvider.issueToken(savedUser.getId());
         updateRefreshToken(issueToken.refreshToken(), savedUser);
-        discordMessageProvider.sendMessage(EventMessage.SIGN_UP_EVENT);
+        int userCount = userRepository.countUser();
+        eventPublisher.publishSignUpEvent(SignUpEvent.of(EventMessage.SIGN_UP_EVENT, savedUser.getName(), userCount));
         return UserSignUpResponse.of(issueToken, savedUser.getId());
     }
 
diff --git a/doorip-common/src/main/java/org/doorip/CommonRoot.java b/doorip-common/src/main/java/org/doorip/CommonRoot.java
deleted file mode 100644
index 86d06f6..0000000
--- a/doorip-common/src/main/java/org/doorip/CommonRoot.java
+++ /dev/null
@@ -1,4 +0,0 @@
-package org.doorip;
-
-public interface CommonRoot {
-}
diff --git a/doorip-common/src/main/java/org/doorip/event/SignUpEvent.java b/doorip-common/src/main/java/org/doorip/event/SignUpEvent.java
new file mode 100644
index 0000000..759ff51
--- /dev/null
+++ b/doorip-common/src/main/java/org/doorip/event/SignUpEvent.java
@@ -0,0 +1,13 @@
+package org.doorip.event;
+
+import org.doorip.message.EventMessage;
+
+public record SignUpEvent(
+        EventMessage eventMessage,
+        String name,
+        int count
+) {
+    public static SignUpEvent of(EventMessage eventMessage, String name, int count) {
+        return new SignUpEvent(eventMessage, name, count);
+    }
+}
diff --git a/doorip-common/src/main/java/org/doorip/message/EventMessage.java b/doorip-common/src/main/java/org/doorip/message/EventMessage.java
index 7e83a66..577b3c0 100644
--- a/doorip-common/src/main/java/org/doorip/message/EventMessage.java
+++ b/doorip-common/src/main/java/org/doorip/message/EventMessage.java
@@ -7,7 +7,7 @@
 @RequiredArgsConstructor(access = AccessLevel.PRIVATE)
 @Getter
 public enum EventMessage {
-    SIGN_UP_EVENT("doorip 서비스에 회원가입 이벤트가 발생했습니다. 🎉");
+    SIGN_UP_EVENT("[🎉 doorip 회원가입 🎉]\n>> 닉네임: [%s]\n>> 현재 가입자 수: [%d명]");
 
     private final String message;
 }
diff --git a/doorip-domain/src/main/java/org/doorip/DomainRoot.java b/doorip-domain/src/main/java/org/doorip/DomainRoot.java
deleted file mode 100644
index c782f51..0000000
--- a/doorip-domain/src/main/java/org/doorip/DomainRoot.java
+++ /dev/null
@@ -1,4 +0,0 @@
-package org.doorip;
-
-public interface DomainRoot {
-}
diff --git a/doorip-domain/src/main/java/org/doorip/user/repository/UserRepository.java b/doorip-domain/src/main/java/org/doorip/user/repository/UserRepository.java
index 42be847..d58de29 100644
--- a/doorip-domain/src/main/java/org/doorip/user/repository/UserRepository.java
+++ b/doorip-domain/src/main/java/org/doorip/user/repository/UserRepository.java
@@ -3,6 +3,7 @@
 import org.doorip.user.domain.Platform;
 import org.doorip.user.domain.User;
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
 
 import java.util.Optional;
 
@@ -10,4 +11,7 @@ public interface UserRepository extends JpaRepository<User, Long> {
     Optional<User> findUserByPlatformAndPlatformId(Platform platform, String platformId);
 
     boolean existsUserByPlatformAndPlatformId(Platform platform, String platformId);
+
+    @Query("select count(*) from User u")
+    int countUser();
 }
diff --git a/doorip-event-publisher/build.gradle b/doorip-event-publisher/build.gradle
new file mode 100644
index 0000000..f15df54
--- /dev/null
+++ b/doorip-event-publisher/build.gradle
@@ -0,0 +1,12 @@
+dependencies {
+    implementation 'org.springframework.boot:spring-boot-starter-web'
+    implementation project(path: ':doorip-common')
+}
+
+bootJar {
+    enabled = false
+}
+
+jar {
+    enabled = true
+}
\ No newline at end of file
diff --git a/doorip-event-publisher/src/main/java/org/doorip/publisher/EventPublisher.java b/doorip-event-publisher/src/main/java/org/doorip/publisher/EventPublisher.java
new file mode 100644
index 0000000..0b04840
--- /dev/null
+++ b/doorip-event-publisher/src/main/java/org/doorip/publisher/EventPublisher.java
@@ -0,0 +1,19 @@
+package org.doorip.publisher;
+
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.doorip.event.SignUpEvent;
+import org.springframework.context.ApplicationEventPublisher;
+import org.springframework.stereotype.Component;
+
+@Slf4j
+@RequiredArgsConstructor
+@Component
+public class EventPublisher {
+    private final ApplicationEventPublisher eventPublisher;
+
+    public void publishSignUpEvent(SignUpEvent event) {
+        log.info("[publish] sign up event {}", event);
+        eventPublisher.publishEvent(event);
+    }
+}
diff --git a/doorip-event-subscriber/build.gradle b/doorip-event-subscriber/build.gradle
new file mode 100644
index 0000000..eedd44f
--- /dev/null
+++ b/doorip-event-subscriber/build.gradle
@@ -0,0 +1,13 @@
+dependencies {
+    implementation 'org.springframework.boot:spring-boot-starter-web'
+    implementation project(path: ':doorip-common')
+    implementation project(path: ':doorip-external')
+}
+
+bootJar {
+    enabled = false
+}
+
+jar {
+    enabled = true
+}
\ No newline at end of file
diff --git a/doorip-event-subscriber/src/main/java/org/doorip/config/AsyncConfig.java b/doorip-event-subscriber/src/main/java/org/doorip/config/AsyncConfig.java
new file mode 100644
index 0000000..7cf6f0e
--- /dev/null
+++ b/doorip-event-subscriber/src/main/java/org/doorip/config/AsyncConfig.java
@@ -0,0 +1,23 @@
+package org.doorip.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.scheduling.annotation.EnableAsync;
+import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
+
+import java.util.concurrent.Executor;
+
+@EnableAsync
+@Configuration
+public class AsyncConfig {
+    @Bean
+    public Executor threadPoolTaskExecutor() {
+        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
+        executor.setCorePoolSize(3);
+        executor.setMaxPoolSize(30);
+        executor.setQueueCapacity(100);
+        executor.setThreadNamePrefix("async-executor-");
+        executor.initialize();
+        return executor;
+    }
+}
diff --git a/doorip-event-subscriber/src/main/java/org/doorip/subscriber/EventSubscriber.java b/doorip-event-subscriber/src/main/java/org/doorip/subscriber/EventSubscriber.java
new file mode 100644
index 0000000..8c2681c
--- /dev/null
+++ b/doorip-event-subscriber/src/main/java/org/doorip/subscriber/EventSubscriber.java
@@ -0,0 +1,26 @@
+package org.doorip.subscriber;
+
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.doorip.event.SignUpEvent;
+import org.doorip.message.EventMessage;
+import org.doorip.openfeign.discord.DiscordMessageProvider;
+import org.springframework.context.event.EventListener;
+import org.springframework.scheduling.annotation.Async;
+import org.springframework.stereotype.Component;
+
+@Slf4j
+@RequiredArgsConstructor
+@Component
+public class EventSubscriber {
+    private final DiscordMessageProvider discordMessageProvider;
+
+    @Async
+    @EventListener
+    public void subscribeSignUpEvent(SignUpEvent event) {
+        log.info("[subscribe] sign up event {}", event);
+        EventMessage eventMessage = event.eventMessage();
+        String message = String.format(eventMessage.getMessage(), event.name(), event.count());
+        discordMessageProvider.sendMessage(message);
+    }
+}
diff --git a/doorip-external/src/main/java/org/doorip/ExternalRoot.java b/doorip-external/src/main/java/org/doorip/ExternalRoot.java
deleted file mode 100644
index bbd191c..0000000
--- a/doorip-external/src/main/java/org/doorip/ExternalRoot.java
+++ /dev/null
@@ -1,4 +0,0 @@
-package org.doorip;
-
-public interface ExternalRoot {
-}
diff --git a/doorip-external/src/main/java/org/doorip/config/FeignClientConfig.java b/doorip-external/src/main/java/org/doorip/config/FeignClientConfig.java
index 1b41be6..5d85133 100644
--- a/doorip-external/src/main/java/org/doorip/config/FeignClientConfig.java
+++ b/doorip-external/src/main/java/org/doorip/config/FeignClientConfig.java
@@ -1,10 +1,9 @@
 package org.doorip.config;
 
-import org.doorip.ExternalRoot;
 import org.springframework.cloud.openfeign.EnableFeignClients;
 import org.springframework.context.annotation.Configuration;
 
 @Configuration
-@EnableFeignClients(basePackageClasses = ExternalRoot.class)
+@EnableFeignClients(basePackages = "org.doorip")
 public class FeignClientConfig {
 }
diff --git a/doorip-external/src/main/java/org/doorip/openfeign/discord/DiscordMessageProvider.java b/doorip-external/src/main/java/org/doorip/openfeign/discord/DiscordMessageProvider.java
index 6780e22..c365368 100644
--- a/doorip-external/src/main/java/org/doorip/openfeign/discord/DiscordMessageProvider.java
+++ b/doorip-external/src/main/java/org/doorip/openfeign/discord/DiscordMessageProvider.java
@@ -4,7 +4,6 @@
 import lombok.RequiredArgsConstructor;
 import org.doorip.exception.InvalidValueException;
 import org.doorip.message.ErrorMessage;
-import org.doorip.message.EventMessage;
 import org.springframework.stereotype.Component;
 
 import static org.doorip.openfeign.discord.DiscordMessage.createDiscordMessage;
@@ -14,8 +13,8 @@
 public class DiscordMessageProvider {
     private final DiscordFeignClient discordFeignClient;
 
-    public void sendMessage(EventMessage eventMessage) {
-        DiscordMessage discordMessage = createDiscordMessage(eventMessage.getMessage());
+    public void sendMessage(String message) {
+        DiscordMessage discordMessage = createDiscordMessage(message);
         sendMessageToDiscord(discordMessage);
     }
 
diff --git a/settings.gradle b/settings.gradle
index 7417e93..8fc3086 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -3,3 +3,6 @@ include 'doorip-api'
 include 'doorip-domain'
 include 'doorip-common'
 include 'doorip-external'
+include 'doorip-event-publisher'
+include 'doorip-event-subscriber'
+