diff --git a/androidStudio/README.md b/androidStudio/README.md
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--- /dev/null
+++ b/androidStudio/README.md
@@ -0,0 +1,14 @@
+# Android Studio
+
+* change location of `C:/Users/user/.AndroidStudio4.0`
+  * Open `D:\Program Files\Android\Android Studio\bin\idea.properties`
+
+```text
+idea.config.path=E:/AndroidHome/.AndroidStudio4.0/config
+
+idea.system.path=E:/AndroidHome/.AndroidStudio4.0/system
+```
+
+* change location of SDK `c:/Users/user/.android`
+  * add environment variable `ANDROID_SDK_HOME=E:/AndroidHome`
+
diff --git a/aws/ecs.md b/aws/ecs.md
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index 0000000..dbd4780
--- /dev/null
+++ b/aws/ecs.md
@@ -0,0 +1,12 @@
+# Elastic Container Service
+
+1. EC2
+2. Fargate : Serverless
+   1. copilot CLI
+
+
+
+## Security
+
+* AWS WAF
+* AWS Shield
\ No newline at end of file
diff --git a/aws/static-web.md b/aws/static-web.md
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+++ b/aws/static-web.md
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+# Static web deployment
+
+1. Amplify Console : CICD pipeline deployment (git -> build -> website)
+2. Amazon Lightsail : Virtual Server, DB
+3. Elastic Beanstalk : Managed server
+4. S3 Web :\\ho
\ No newline at end of file
diff --git a/vagrant/README.md b/vagrant/README.md
index cbc61e4..20baeb5 100644
--- a/vagrant/README.md
+++ b/vagrant/README.md
@@ -1,22 +1,25 @@
-# Vagrant
-
-* virtualize CLI. Required VM provider such as HyperV, VirtualBox, Vmware 
-* Box at [vagrant app](https://app.vagrantup.com/boxes)
-
-* CLI (run as admin)
-
-```shell
-
-// init folder for vm setup
-$ vagrant init bento/ubuntu-19.10
-
-// spin up the vm
-$ vagrant up
-
-// login to vm
-$ vagrant ssh
-
-// shoutdown the vm
-$ vagrant halt
-```
-
+# Vagrant
+
+* virtualize CLI. Required VM provider such as HyperV, VirtualBox, Vmware 
+* Box at [vagrant app](https://app.vagrantup.com/boxes)
+
+* CLI (run as admin)
+
+```shell
+
+// init folder for vm setup
+$ vagrant init bento/ubuntu-19.10
+
+// spin up the vm
+$ vagrant up
+
+// login to vm
+$ vagrant ssh
+
+// shoutdown the vm
+$ vagrant halt
+```
+
+* configure boxes download location. Default `C:/users/user/.vagrant.d`
+  * Set Environment variable to customize `VAGRANT_HOME=E:/.vagrant.d`
+
diff --git a/vscode/gradle.md b/vscode/gradle.md
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index 0000000..6c17dab
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+++ b/vscode/gradle.md
@@ -0,0 +1,24 @@
+# Quick Guide
+
+* Prerequisite
+
+  * Gradle Extension Pack
+  * Java Extension Pack
+  * JDK 11 for Java Server Tool support
+  * Spring boot Pack
+
+* To implement gradle bootRun with debugger, add below to `settings.json`
+
+  ```json
+  { 
+    "gradle.javaDebug": {
+      "tasks": [
+        "bootRun"
+      ],
+      "clean": true
+    }
+  }
+  ```
+
+  
+