diff --git a/.platform/nginx.conf b/.platform/nginx.conf
deleted file mode 100644
index 612092e..0000000
--- a/.platform/nginx.conf
+++ /dev/null
@@ -1,63 +0,0 @@
-user                    nginx;
-error_log               /var/log/nginx/error.log warn;
-pid                     /var/run/nginx.pid;
-worker_processes        auto;
-worker_rlimit_nofile    33282;
-
-events {
-    use epoll;
-    worker_connections  1024;
-    multi_accept on;
-}
-
-http {
-  include       /etc/nginx/mime.types;
-  default_type  application/octet-stream;
-
-
-  log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
-                    '$status $body_bytes_sent "$http_referer" '
-                    '"$http_user_agent" "$http_x_forwarded_for"';
-
-  include       conf.d/*.conf;
-
-  map $http_upgrade $connection_upgrade {
-      default     "upgrade";
-  }
-
-  upstream springboot {
-    server 127.0.0.1:8080;
-    keepalive 1024;
-  }
-
-  server {
-      listen        80 default_server;
-      listen        [::]:80 default_server;
-
-      location / {
-          proxy_pass          http://springboot;
-                  # CORS 관련 헤더 추가
-          add_header 'Access-Control-Allow-Origin' '*';
-          add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS';
-          add_header 'Access-Control-Allow-Headers' 'Authorization, Content-Type';
-          proxy_http_version  1.1;
-          proxy_set_header    Connection          $connection_upgrade;
-          proxy_set_header    Upgrade             $http_upgrade;
-
-          proxy_set_header    Host                $host;
-          proxy_set_header    X-Real-IP           $remote_addr;
-          proxy_set_header    X-Forwarded-For     $proxy_add_x_forwarded_for;
-      }
-
-      access_log    /var/log/nginx/access.log main;
-
-      client_header_timeout 60;
-      client_body_timeout   60;
-      keepalive_timeout     60;
-      gzip                  off;
-      gzip_comp_level       4;
-
-      # Include the Elastic Beanstalk generated locations
-      include conf.d/elasticbeanstalk/healthd.conf;
-  }
-}
\ No newline at end of file
diff --git a/appspec.yml b/appspec.yml
index 2959735..aea80b9 100644
--- a/appspec.yml
+++ b/appspec.yml
@@ -11,4 +11,16 @@ permissions:
   - object: /
     pattern: "**"
     owner: ec2-user
-    group: ec2-user
\ No newline at end of file
+    group: ec2-user
+
+hooks:
+  ApplicationStart:
+    - location: scripts/run_new_was.sh
+      timeout: 180
+      runas: ec2-user
+    - location: scripts/health_check.sh
+      timeout: 180
+      runas: ec2-user
+    - location: scripts/switch.sh
+      timeout: 180
+      runas: ec2-user
\ No newline at end of file
diff --git a/scripts/health_check.sh b/scripts/health_check.sh
new file mode 100644
index 0000000..ecb8b3a
--- /dev/null
+++ b/scripts/health_check.sh
@@ -0,0 +1,35 @@
+# health_check.sh
+
+#!/bin/bash
+
+# Crawl current connected port of WAS
+CURRENT_PORT=$(cat /home/ec2-user/service_url.inc | grep -Po '[0-9]+' | tail -1)
+TARGET_PORT=0
+
+# Toggle port Number
+if [ ${CURRENT_PORT} -eq 8081 ]; then
+    TARGET_PORT=8082
+elif [ ${CURRENT_PORT} -eq 8082 ]; then
+    TARGET_PORT=8081
+else
+    echo "> No WAS is connected to nginx"
+    exit 1
+fi
+
+
+echo "> Start health check of WAS at 'http://127.0.0.1:${TARGET_PORT}' ..."
+
+for RETRY_COUNT in 1 2 3 4 5 6 7 8 9 10
+do
+    echo "> #${RETRY_COUNT} trying..."
+    RESPONSE_CODE=$(curl -s -o /dev/null -w "%{http_code}"  http://127.0.0.1:${TARGET_PORT}/health)
+
+    if [ ${RESPONSE_CODE} -eq 200 ]; then
+        echo "> New WAS successfully running"
+        exit 0
+    elif [ ${RETRY_COUNT} -eq 10 ]; then
+        echo "> Health check failed."
+        exit 1
+    fi
+    sleep 10
+done
\ No newline at end of file
diff --git a/scripts/run_new_was.sh b/scripts/run_new_was.sh
new file mode 100644
index 0000000..5eed8e3
--- /dev/null
+++ b/scripts/run_new_was.sh
@@ -0,0 +1,27 @@
+# run_new_was.sh
+
+#!/bin/bash
+
+CURRENT_PORT=$(cat /home/ec2-user/service_url.inc | grep -Po '[0-9]+' | tail -1)
+TARGET_PORT=0
+
+echo "> Current port of running WAS is ${CURRENT_PORT}."
+
+if [ ${CURRENT_PORT} -eq 8081 ]; then
+  TARGET_PORT=8082
+elif [ ${CURRENT_PORT} -eq 8082 ]; then
+  TARGET_PORT=8081
+else
+  echo "> No WAS is connected to nginx"
+fi
+
+TARGET_PID=$(lsof -Fp -i TCP:${TARGET_PORT} | grep -Po 'p[0-9]+' | grep -Po '[0-9]+')
+
+if [ ! -z ${TARGET_PID} ]; then
+  echo "> Kill WAS running at ${TARGET_PORT}."
+  sudo kill ${TARGET_PID}
+fi
+
+nohup java -jar -Dserver.port=${TARGET_PORT} /home/ec2-user/ssu-plector/build/libs/* > /home/ec2-user/nohup.out 2>&1 &
+echo "> Now new WAS runs at ${TARGET_PORT}."
+exit 0
\ No newline at end of file
diff --git a/scripts/switch.sh b/scripts/switch.sh
new file mode 100644
index 0000000..a7171a5
--- /dev/null
+++ b/scripts/switch.sh
@@ -0,0 +1,29 @@
+# switch.sh
+
+#!/bin/bash
+
+# Crawl current connected port of WAS
+CURRENT_PORT=$(cat /home/ec2-user/service_url.inc  | grep -Po '[0-9]+' | tail -1)
+TARGET_PORT=0
+
+echo "> Nginx currently proxies to ${CURRENT_PORT}."
+
+# Toggle port number
+if [ ${CURRENT_PORT} -eq 8081 ]; then
+    TARGET_PORT=8082
+elif [ ${CURRENT_PORT} -eq 8082 ]; then
+    TARGET_PORT=8081
+else
+    echo "> No WAS is connected to nginx"
+    exit 1
+fi
+
+# Change proxying port into target port
+echo "set \$service_url http://127.0.0.1:${TARGET_PORT};" | tee /home/ec2-user/service_url.inc
+
+echo "> Now Nginx proxies to ${TARGET_PORT}."
+
+# Reload nginx
+sudo service nginx reload
+
+echo "> Nginx reloaded."
\ No newline at end of file