diff --git a/.gitignore b/.gitignore
index c423139..637b488 100644
--- a/.gitignore
+++ b/.gitignore
@@ -88,4 +88,4 @@
 /BackEnd/configs/OS.js
 /BackEnd/src/configs/OS.ts
 /BackEnd/dist
-
+/BackEnd/.env*
diff --git a/BackEnd/nodemon.json b/BackEnd/nodemon.json
index f8be398..c200acd 100644
--- a/BackEnd/nodemon.json
+++ b/BackEnd/nodemon.json
@@ -2,7 +2,10 @@
     "events": {
         "start": "clear"
     },
+    "execMap": {
+        "ts": "ts-node -r dotenv/config"
+    },
     "ext": "ts",
-    "ignore": [".git", "node_modules", "dist"],
+    "ignore": [".git", "node_modules", "dist", "uploads"],
     "watch": ["./src"]
 }
diff --git a/BackEnd/package-lock.json b/BackEnd/package-lock.json
index 748049b..34b4efc 100644
--- a/BackEnd/package-lock.json
+++ b/BackEnd/package-lock.json
@@ -14,7 +14,9 @@
         "body-parser": "^1.19.0",
         "child_process": "^1.0.2",
         "cors": "2.8.5",
+        "dotenv": "^10.0.0",
         "ejs": "3.1.5",
+        "envalid": "^7.1.1",
         "errorhandler": "1.5.1",
         "express": "^4.17.1",
         "express-generator": "^4.16.1",
@@ -2969,6 +2971,14 @@
         "node": ">=4"
       }
     },
+    "node_modules/dotenv": {
+      "version": "10.0.0",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-10.0.0.tgz",
+      "integrity": "sha512-rlBi9d8jpv9Sf1klPjNfFAuWDjKLwTIJJ/VxtoTwIR6hnZxcEOQCZg2oIL3MWBYw5GpUDKOEnND7LXTbIpQ03Q==",
+      "engines": {
+        "node": ">=10"
+      }
+    },
     "node_modules/duplexer2": {
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/duplexer2/-/duplexer2-0.1.4.tgz",
@@ -3137,6 +3147,14 @@
       "integrity": "sha512-f2LZMYl1Fzu7YSBKg+RoROelpOaNrcGmE9AZubeDfrCEia483oW4MI4VyFd5VNHIgQ/7qm1I0wUHK1eJnn2y2w==",
       "dev": true
     },
+    "node_modules/envalid": {
+      "version": "7.1.1",
+      "resolved": "https://registry.npmjs.org/envalid/-/envalid-7.1.1.tgz",
+      "integrity": "sha512-2MIPjXAWcAVsO2jTVbgMFRc66lQCy2bQDP+zPT3NucrbWMD3pij5iGZMwQiv3zdveyVfl0qAGpI1JRQGfkmu1w==",
+      "engines": {
+        "node": ">=8.12"
+      }
+    },
     "node_modules/error-ex": {
       "version": "1.3.2",
       "resolved": "https://registry.npmjs.org/error-ex/-/error-ex-1.3.2.tgz",
@@ -14646,6 +14664,11 @@
         "is-obj": "^1.0.0"
       }
     },
+    "dotenv": {
+      "version": "10.0.0",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-10.0.0.tgz",
+      "integrity": "sha512-rlBi9d8jpv9Sf1klPjNfFAuWDjKLwTIJJ/VxtoTwIR6hnZxcEOQCZg2oIL3MWBYw5GpUDKOEnND7LXTbIpQ03Q=="
+    },
     "duplexer2": {
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/duplexer2/-/duplexer2-0.1.4.tgz",
@@ -14805,6 +14828,11 @@
       "integrity": "sha512-f2LZMYl1Fzu7YSBKg+RoROelpOaNrcGmE9AZubeDfrCEia483oW4MI4VyFd5VNHIgQ/7qm1I0wUHK1eJnn2y2w==",
       "dev": true
     },
+    "envalid": {
+      "version": "7.1.1",
+      "resolved": "https://registry.npmjs.org/envalid/-/envalid-7.1.1.tgz",
+      "integrity": "sha512-2MIPjXAWcAVsO2jTVbgMFRc66lQCy2bQDP+zPT3NucrbWMD3pij5iGZMwQiv3zdveyVfl0qAGpI1JRQGfkmu1w=="
+    },
     "error-ex": {
       "version": "1.3.2",
       "resolved": "https://registry.npmjs.org/error-ex/-/error-ex-1.3.2.tgz",
diff --git a/BackEnd/package.json b/BackEnd/package.json
index a482297..517518b 100644
--- a/BackEnd/package.json
+++ b/BackEnd/package.json
@@ -20,7 +20,9 @@
     "body-parser": "^1.19.0",
     "child_process": "^1.0.2",
     "cors": "2.8.5",
+    "dotenv": "^10.0.0",
     "ejs": "3.1.5",
+    "envalid": "^7.1.1",
     "errorhandler": "1.5.1",
     "express": "^4.17.1",
     "express-generator": "^4.16.1",
diff --git a/BackEnd/src/env/db.ts b/BackEnd/src/env/db.ts
new file mode 100644
index 0000000..efba7fa
--- /dev/null
+++ b/BackEnd/src/env/db.ts
@@ -0,0 +1,2 @@
+export default {
+}
diff --git a/BackEnd/src/env/index.ts b/BackEnd/src/env/index.ts
new file mode 100644
index 0000000..adaec72
--- /dev/null
+++ b/BackEnd/src/env/index.ts
@@ -0,0 +1,15 @@
+import { cleanEnv, str } from 'envalid'
+
+import serverEnv from './server'
+import dbEnv from './db'
+
+const env = cleanEnv(process.env, {
+  NODE_ENV: str({
+    choices: ['development', 'test', 'production']
+  }),
+
+  ...serverEnv,
+  ...dbEnv
+})
+
+export default env
diff --git a/BackEnd/src/env/server.ts b/BackEnd/src/env/server.ts
new file mode 100644
index 0000000..f12f76f
--- /dev/null
+++ b/BackEnd/src/env/server.ts
@@ -0,0 +1,19 @@
+import { bool, host, port, str } from 'envalid'
+import { ownDefault } from './utils'
+
+export default {
+  SERVER_HOSTNAME: host({ devDefault: 'localhost' }),
+  SERVER_PORT: port({ devDefault: 3000 }),
+
+  SERVER_DEBUG: bool({
+    desc: 'Allow to see more debug from like error handlers',
+    default: false,
+    devDefault: ownDefault({ dev: true, test: false, all: false })
+  }),
+  SERVER_MORGAN_FORMAT: str({
+    choices: ['combined', 'common', 'dev', 'short', 'tiny'],
+    default: 'combined',
+    devDefault: 'dev',
+    docs: 'https://www.npmjs.com/package/morgan#predefined-formats'
+  })
+}
diff --git a/BackEnd/src/env/utils.ts b/BackEnd/src/env/utils.ts
new file mode 100644
index 0000000..41a5bcd
--- /dev/null
+++ b/BackEnd/src/env/utils.ts
@@ -0,0 +1,11 @@
+export function ownDefault<T> ({ dev, test, all }:
+                              {dev: T, test: T, all: T}) {
+  switch (process.env.NODE_ENV) {
+  case 'test':
+    return test
+  case 'development':
+    return dev
+  default:
+    return all
+  }
+}