diff --git a/backend/app/config/checkFormat.config.js b/backend/app/config/checkFormat.config.js
deleted file mode 100644
index 6b74fe0..0000000
--- a/backend/app/config/checkFormat.config.js
+++ /dev/null
@@ -1,9 +0,0 @@
-const {sendError} = require ("./response.config");
-
-function checkFormat(req, res){
-  if(req.get('Content-Type') !== 'application/json') {
-    return sendError(res, 401, -1, "Invalid header format (please use JSON)");
-  }
-  return true; // Is valid
-}
-module.exports = checkFormat
diff --git a/backend/app/config/host.config.js b/backend/app/config/host.config.js
new file mode 100644
index 0000000..d743011
--- /dev/null
+++ b/backend/app/config/host.config.js
@@ -0,0 +1,8 @@
+module.exports = {
+  youtube: {
+    baseAPIUrl: 'https://www.youtube.com/'
+  },
+  dailymotion: {
+    baseAPIUrl: 'https://api.dailymotion.com/'
+  }
+};
diff --git a/backend/app/config/role.config.js b/backend/app/config/role.config.js
new file mode 100644
index 0000000..32851a0
--- /dev/null
+++ b/backend/app/config/role.config.js
@@ -0,0 +1,5 @@
+module.exports = {
+  User: 0,
+  Advertiser: 5,
+  Admin: 10
+};
diff --git a/backend/app/config/sessionJWT.config.js b/backend/app/config/sessionJWT.config.js
index b5b76cb..bca0408 100644
--- a/backend/app/config/sessionJWT.config.js
+++ b/backend/app/config/sessionJWT.config.js
@@ -12,9 +12,10 @@ const JWTRS256_PRIVATE_KEY = Buffer.from(process.env.JWTRS256_PRIVATE_KEY, 'base
 const JWTRS256_PUBLIC_KEY = Buffer.from(process.env.JWTRS256_PUBLIC_KEY, 'base64').toString('utf-8');
 
 
-function createSessionJWT (login, role) {
+function createSessionJWT (id, login, role) {
   return sessionJWTConfig.sign(
     {
+      id: id,
       login: login,
       role: role,
       midExp: Math.floor(Date.now() / 1000) + 1800
@@ -29,21 +30,22 @@ function createSessionJWT (login, role) {
 
 function createSessionCookie(req, res, payload) {
   let jwtToken;
-  if (typeof payload.login !== 'undefined' &&
+  if (typeof payload.id !== 'undefined' &&
+    typeof payload.login !== 'undefined' &&
     typeof payload.role !== 'undefined' &&
     typeof payload.midExp !== 'undefined' &&
     (Math.floor(Date.now() / 1000) <= payload.midExp)) {
     jwtToken = req.headers.cookie;
   }
   else {
-    jwtToken = createSessionJWT(payload.login, payload.role);
+    jwtToken = createSessionJWT(payload.id, payload.login, payload.role);
   }
   res.cookie('SESSIONID', jwtToken, {httpOnly:true, secure:false});
 }
 
 function decodeSessionCookie(sessionid) {
   if (typeof sessionid === 'undefined') {
-    return {login: -1, role: -1};
+    return {id: -1, login: -1, role: -1};
   }
   try {
     const token = sessionJWTConfig.verify(
@@ -53,7 +55,7 @@ function decodeSessionCookie(sessionid) {
     return {token: token};
   }
   catch (err) {
-    return {login: -1, role: -1};
+    return {id: -1, login: -1, role: -1};
   }
 }
 
@@ -83,7 +85,7 @@ function checkLogin(req, res, role=null){
       if(role === null){
         return token;
       } else{
-        if(token.role !== 'undefined' && token.role === role){
+        if(token.role !== 'undefined' && role.includes(token.role)){
           return token;
         } else{
           return sendError(res, 500, -1, "User doesn't have permission.", token);
diff --git a/backend/app/controllers/ad.controller.js b/backend/app/controllers/ad.controller.js
new file mode 100644
index 0000000..5845b33
--- /dev/null
+++ b/backend/app/controllers/ad.controller.js
@@ -0,0 +1,53 @@
+const db = require("../models/mongodb.model");
+const {sendError, sendMessage} = require ("../config/response.config");
+const {checkLogin} = require("../config/sessionJWT.config");
+const roles = require("../config/role.config");
+const Ads = db.ads;
+
+// Create a new Ad
+exports.create = (req, res) => {
+  const token = checkLogin(req, res, [roles.Admin, roles.Advertiser]);
+  if(token){
+    return sendError(res, 501, -1, "Ads.create not Implemented", token);
+  }
+};
+
+// Retrieve all Ads
+exports.findAll = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Ads.findAll not Implemented", token);
+  }
+};
+
+// Retrieve a single Ad with id
+exports.findOne = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Ads.findOne not Implemented", token);
+  }
+};
+
+// Update a Ad with id
+exports.update = (req, res) => {
+  const token = checkLogin(req, res, [roles.Admin, roles.Advertiser]);
+  if(token){
+    return sendError(res, 501, -1, "Ads.update not Implemented", token);
+  }
+};
+
+// Delete a Ad with id
+exports.delete = (req, res) => {
+  const token = checkLogin(req, res, [roles.Admin, roles.Advertiser]);
+  if(token){
+    return sendError(res, 501, -1, "Ads.delete not Implemented", token);
+  }
+};
+
+// Delete all Ads
+exports.deleteAll = (req, res) => {
+  const token = checkLogin(req, res, [roles.Admin, roles.Advertiser]);
+  if(token){
+    return sendError(res, 501, -1, "Ads.deleteAll not Implemented", token);
+  }
+};
diff --git a/backend/app/controllers/playlist.controller.js b/backend/app/controllers/playlist.controller.js
new file mode 100644
index 0000000..1b5ae3f
--- /dev/null
+++ b/backend/app/controllers/playlist.controller.js
@@ -0,0 +1,52 @@
+const db = require("../models/mongodb.model");
+const {sendError, sendMessage} = require ("../config/response.config");
+const {checkLogin} = require("../config/sessionJWT.config");
+const Playlist = db.playlists;
+
+// Create a new Playlist
+exports.create = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Playlist.create not Implemented", token);
+  }
+};
+
+// Retrieve all Playlists
+exports.findAll = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Playlist.findAll not Implemented", token);
+  }
+};
+
+// Retrieve a single Playlist with id
+exports.findOne = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Playlist.findOne not Implemented", token);
+  }
+};
+
+// Update a Playlist with id
+exports.update = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Playlist.update not Implemented", token);
+  }
+};
+
+// Delete a Playlist with id
+exports.delete = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Playlist.delete not Implemented", token);
+  }
+};
+
+// Delete all Playlists
+exports.deleteAll = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Playlist.deleteAll not Implemented", token);
+  }
+};
diff --git a/backend/app/controllers/user.controller.js b/backend/app/controllers/user.controller.js
index 51a01d1..2113c7f 100644
--- a/backend/app/controllers/user.controller.js
+++ b/backend/app/controllers/user.controller.js
@@ -1,12 +1,11 @@
 const db = require("../models/mongodb.model");
 const {sendError, sendMessage} = require ("../config/response.config");
-const checkFormat = require("../config/checkFormat.config");
 const {checkLogin, setSessionCookie} = require("../config/sessionJWT.config");
+const roles = require("../config/role.config");
 const User = db.users;
 
-// Authenticate an User
+// Authenticate a User
 exports.auth = (req, res) => {
-  checkFormat(req, res);
   // Validate request
   if (!req.body.login || !req.body.hashPass) {
     sendError(res, 400,-1,"Content can not be empty ! (login and hashPass needed)");
@@ -16,10 +15,10 @@ exports.auth = (req, res) => {
       .findOne({login: req.body.login, hashPass: req.body.hashPass}, {role: true})
       .then(data => {
         if (data !== null){
-          setSessionCookie(req, res, { login: req.body.login, role: data.role});
+          setSessionCookie(req, res, {id: data._id, login: req.body.login, role: data.role});
           return sendMessage(res, 1, true);
         } else {
-          setSessionCookie(req, res, { login: -1, role: -1 });
+          setSessionCookie(req, res, {id: -1, login: -1, role: -1 });
           return sendError(res, 500, -1, "Invalid login or password.");
         }
       })
@@ -29,19 +28,18 @@ exports.auth = (req, res) => {
   }
 };
 
-// Disconnect an User
+// Logout a User
 exports.disconnect = (req, res) => {
-  let token;
-  if(checkFormat(req, res) && (token = checkLogin(req, res))) {
+  const token = checkLogin(req, res);
+  if(token){
     console.log(token);
-    setSessionCookie(req, res, {login: -1});
+    setSessionCookie(req, res, {id: -1, login: -1, role: -1});
     return sendMessage(res, 1, {message: "User disconnected"}, token);
   }
 };
 
 // Create and Save a new User
 exports.create = (req, res) => {
-  checkFormat(req, res);
   // Validate request
   if (!req.body.login || !req.body.hashPass || !req.body.mail) {
     sendError(res, 400,-1,"Content can not be empty ! (login, hashPass and mail needed");
@@ -77,10 +75,10 @@ exports.create = (req, res) => {
   }
 };
 
-// Retrieve all Users from the database.
+// Retrieve all Users from the database if admin.
 exports.findAll = (req, res) => {
-  let token;
-  if(checkFormat(req, res) && (token = checkLogin(req, res, 10))){
+  const token = checkLogin(req, res, [roles.Admin]);
+  if(token){
     console.log(token);
     const login = req.query.login;
     let condition = login ? { login: { $regex: new RegExp(login), $options: "i" } } : {};
@@ -95,27 +93,34 @@ exports.findAll = (req, res) => {
   }
 };
 
-// Find a single User with an id
+// Find a single User with login if admin or login from cookie session
 exports.findOne = (req, res) => {
-  checkFormat(req, res);
-  const id = req.params.id;
+  const token = checkLogin(req, res);
+  if(token){
+    let login;
+    if(token.role === [roles.Admin]){
+      login = req.params.login;
 
-  User.findById(id, {hashPass: false})
-    .then(data => {
-      if (data){
-        sendMessage(res, 1, data);
-      } else {
-        sendError(res,404,-1,"Not found User with id " + id );
-      }
-    })
-    .catch(err => {
-      sendError(res,500,-1,err.message || "Error retrieving User with id=" + id );
-    });
+    } else{
+      login = token.login;
+    }
+    console.log(token.role, login);
+    User.find({login: login}, {hashPass: false})
+      .then(data => {
+        if (data){
+          sendMessage(res, 1, data);
+        } else {
+          sendError(res,404,-1,"Not found User with login " + login );
+        }
+      })
+      .catch(err => {
+        sendError(res,500,-1,err.message || "Error retrieving User with login=" + login );
+      });
+  }
 };
 
 // Update a User by the id in the request
 exports.update = (req, res) => {
-  checkFormat(req, res);
   if (!req.body) {
     sendError(res,400,-1,"Data to update can not be empty!");
   } else{
@@ -137,7 +142,6 @@ exports.update = (req, res) => {
 
 // Delete a User with the specified id in the request
 exports.delete = (req, res) => {
-  checkFormat(req, res);
   const id = req.params.id;
 
   User.findByIdAndRemove(id)
@@ -155,14 +159,17 @@ exports.delete = (req, res) => {
 
 // Delete all Users from the database.
 exports.deleteAll = (req, res) => {
-  checkFormat(req, res);
-  User.deleteMany({})
-    .then(data => {
-      sendMessage(res, 1,{
-        message: `${data.deletedCount} Users were deleted successfully!`
+  const token = checkLogin(req, res, [roles.Admin]);
+  if(token) {
+    console.log(token);
+    User.deleteMany({})
+      .then(data => {
+        sendMessage(res, 1, {
+          message: `${data.deletedCount} Users were deleted successfully!`
+        });
+      })
+      .catch(err => {
+        sendError(res, 500, -1, err.message || "Some error occurred while removing all Users.");
       });
-    })
-    .catch(err => {
-      sendError(res,500,-1,err.message || "Some error occurred while removing all Users.");
-    });
+  }
 };
diff --git a/backend/app/controllers/video.controller.js b/backend/app/controllers/video.controller.js
new file mode 100644
index 0000000..4383868
--- /dev/null
+++ b/backend/app/controllers/video.controller.js
@@ -0,0 +1,60 @@
+const db = require("../models/mongodb.model");
+const {sendError, sendMessage} = require ("../config/response.config");
+const {checkLogin} = require("../config/sessionJWT.config");
+const Video = db.video;
+
+// Search Video
+exports.search = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Video.search not Implemented", token);
+  }
+};
+
+// Create a new Video
+exports.create = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Video.create not Implemented", token);
+  }
+};
+
+// Retrieve all Videos
+exports.findAll = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Video.findAll not Implemented", token);
+  }
+};
+
+// Retrieve a single Video with id
+exports.findOne = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Video.findOne not Implemented", token);
+  }
+};
+
+// Update a Video with id
+exports.update = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Video.update not Implemented", token);
+  }
+};
+
+// Delete a Video with id
+exports.delete = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Video.delete not Implemented", token);
+  }
+};
+
+// Delete all Videos
+exports.deleteAll = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Video.deleteAll not Implemented", token);
+  }
+};
diff --git a/backend/app/models/ad.model.js b/backend/app/models/ad.model.js
new file mode 100644
index 0000000..85404bc
--- /dev/null
+++ b/backend/app/models/ad.model.js
@@ -0,0 +1,18 @@
+module.exports = mongoose => {
+  let schema = mongoose.Schema({
+      images: [],
+      text: String,
+      subjectTarget: [],
+      seen: Number
+    },
+    { timestamps: true }
+  );
+
+  schema.method("toJSON", function() {
+    const { __v, _id, ...object } = this.toObject();
+    object.id = _id;
+    return object;
+  });
+
+  return mongoose.model("ad", schema);
+};
diff --git a/backend/app/models/image.model.js b/backend/app/models/image.model.js
new file mode 100644
index 0000000..c966167
--- /dev/null
+++ b/backend/app/models/image.model.js
@@ -0,0 +1,18 @@
+module.exports = mongoose => {
+  let schema = mongoose.Schema({
+      base64: String,
+      fromUrl: String,
+      description: String,
+      type: Number
+    },
+    { timestamps: true }
+  );
+
+  schema.method("toJSON", function() {
+    const { __v, _id, ...object } = this.toObject();
+    object.id = _id;
+    return object;
+  });
+
+  return mongoose.model("image", schema);
+};
diff --git a/backend/app/models/mongodb.model.js b/backend/app/models/mongodb.model.js
index 58cce74..1fb040b 100644
--- a/backend/app/models/mongodb.model.js
+++ b/backend/app/models/mongodb.model.js
@@ -7,5 +7,9 @@ const db = {};
 db.mongoose = mongoose;
 db.url = dbConfig.url;
 db.users = require("./user.model")(mongoose);
+db.playlists = require("./playlist.model")(mongoose);
+db.videos = require("./video.model")(mongoose);
+db.ads = require("./ad.model")(mongoose);
+db.images = require("./image.model")(mongoose);
 
 module.exports = db;
diff --git a/backend/app/models/playlist.model.js b/backend/app/models/playlist.model.js
new file mode 100644
index 0000000..2d7af15
--- /dev/null
+++ b/backend/app/models/playlist.model.js
@@ -0,0 +1,16 @@
+module.exports = mongoose => {
+  let schema = mongoose.Schema({
+      name: String,
+      videos: []
+    },
+    { timestamps: true }
+  );
+
+  schema.method("toJSON", function() {
+    const { __v, _id, ...object } = this.toObject();
+    object.id = _id;
+    return object;
+  });
+
+  return mongoose.model("playlist", schema);
+};
diff --git a/backend/app/models/subjectTarget.model.js b/backend/app/models/subjectTarget.model.js
new file mode 100644
index 0000000..cded850
--- /dev/null
+++ b/backend/app/models/subjectTarget.model.js
@@ -0,0 +1,16 @@
+module.exports = mongoose => {
+  let schema = mongoose.Schema({
+      name: String,
+      keywords: []
+    },
+    { timestamps: true }
+  );
+
+  schema.method("toJSON", function() {
+    const { __v, _id, ...object } = this.toObject();
+    object.id = _id;
+    return object;
+  });
+
+  return mongoose.model("subjectTarget", schema);
+};
diff --git a/backend/app/models/user.model.js b/backend/app/models/user.model.js
index c9b97b5..071c84e 100644
--- a/backend/app/models/user.model.js
+++ b/backend/app/models/user.model.js
@@ -1,3 +1,5 @@
+const roles = require("../config/role.config");
+
 module.exports = mongoose => {
   let schema = mongoose.Schema({
       login: String,
@@ -5,8 +7,9 @@ module.exports = mongoose => {
       mail: String,
       role: {
         type: Number,
-        default: 0
-      }
+        default: roles.User
+      },
+      playlists: []
     },
     { timestamps: true }
   );
diff --git a/backend/app/models/video.model.js b/backend/app/models/video.model.js
new file mode 100644
index 0000000..ce2769e
--- /dev/null
+++ b/backend/app/models/video.model.js
@@ -0,0 +1,18 @@
+module.exports = mongoose => {
+  let schema = mongoose.Schema({
+      url: String,
+      title: String,
+      description: String,
+      views: Number
+    },
+    { timestamps: true }
+  );
+
+  schema.method("toJSON", function() {
+    const { __v, _id, ...object } = this.toObject();
+    object.id = _id;
+    return object;
+  });
+
+  return mongoose.model("video", schema);
+};
diff --git a/backend/app/routes/ad.routes.js b/backend/app/routes/ad.routes.js
new file mode 100644
index 0000000..943dcc7
--- /dev/null
+++ b/backend/app/routes/ad.routes.js
@@ -0,0 +1,24 @@
+const ads = require("../controllers/ad.controller");
+module.exports = app => {
+  let router = require("express").Router();
+
+  // Create a new Ad
+  router.post("/user/ad", ads.create);
+
+  // Retrieve all Ads
+  router.get("/user/ad", ads.findAll);
+
+  // Retrieve a single Ad with id
+  router.get("/user/ad/:id", ads.findOne);
+
+  // Update an Ad with id
+  router.put("/user/ad/:id", ads.update);
+
+  // Delete an Ad with id
+  router.delete("/user/ad/:id", ads.delete);
+
+  // Delete all Ads
+  router.delete("/user/ad", ads.deleteAll);
+
+  app.use('/api', router);
+};
diff --git a/backend/app/routes/playlist.routes.js b/backend/app/routes/playlist.routes.js
new file mode 100644
index 0000000..1d8241a
--- /dev/null
+++ b/backend/app/routes/playlist.routes.js
@@ -0,0 +1,24 @@
+const playlists = require("../controllers/playlist.controller");
+module.exports = app => {
+  let router = require("express").Router();
+
+  // Create a new Playlist
+  router.post("/user/playlist", playlists.create);
+
+  // Retrieve all Playlists
+  router.get("/user/playlists", playlists.findAll);
+
+  // Retrieve a single Playlist with id
+  router.get("/user/playlist/:id", playlists.findOne);
+
+  // Update a Playlist with id
+  router.put("/user/playlist/:id", playlists.update);
+
+  // Delete a Playlist with id
+  router.delete("/user/playlist/:id", playlists.delete);
+
+  // Delete all Playlists
+  router.delete("/user/playlists", playlists.deleteAll);
+
+  app.use('/api', router);
+};
diff --git a/backend/app/routes/user.routes.js b/backend/app/routes/user.routes.js
index b3ba76f..5e30e34 100644
--- a/backend/app/routes/user.routes.js
+++ b/backend/app/routes/user.routes.js
@@ -3,28 +3,28 @@ module.exports = app => {
   let router = require("express").Router();
 
   // Create a new User
-  router.post("/", users.create);
+  router.post("/user", users.create);
 
   // Retrieve all Users
-  router.get("/", users.findAll);
+  router.get("/users", users.findAll);
 
   // Retrieve a single User with id
-  router.get("/:id", users.findOne);
+  router.get("/user/:id", users.findOne);
 
   // Update a User with id
-  router.put("/:id", users.update);
+  router.put("/user/:id", users.update);
 
   // Delete a User with id
-  router.delete("/:id", users.delete);
+  router.delete("/user/:id", users.delete);
 
   // Delete all Users
-  router.delete("/", users.deleteAll);
+  router.delete("/users", users.deleteAll);
 
   // Authenticate a User
-  router.post("/auth", users.auth);
+  router.post("/user/auth", users.auth);
 
-  // Disconnect a User
-  router.delete("/auth/disconnect", users.disconnect);
+  // Logout a User
+  router.delete("/user/logout", users.disconnect);
 
-  app.use('/api/users', router);
+  app.use('/api', router);
 };
diff --git a/backend/app/routes/video.routes.js b/backend/app/routes/video.routes.js
new file mode 100644
index 0000000..42af7f4
--- /dev/null
+++ b/backend/app/routes/video.routes.js
@@ -0,0 +1,27 @@
+const videos = require("../controllers/video.controller");
+module.exports = app => {
+  let router = require("express").Router();
+
+  // Search Video
+  router.post("/videos", videos.search);
+
+  // Create a new Video
+  router.post("/video", videos.create);
+
+  // Retrieve all Videos
+  router.get("/videos", videos.findAll);
+
+  // Retrieve a single Video with id
+  router.get("/video/:id", videos.findOne);
+
+  // Update a Video with id
+  router.put("/video/:id", videos.update);
+
+  // Delete a Video with id
+  router.delete("/video/:id", videos.delete);
+
+  // Delete all Videos
+  router.delete("/videos", videos.deleteAll);
+
+  app.use('/api', router);
+};
diff --git a/backend/server.js b/backend/server.js
index f349ba7..73f2ff2 100644
--- a/backend/server.js
+++ b/backend/server.js
@@ -28,6 +28,9 @@ db.mongoose
 
 require("./app/config/sessionJWT.config");
 require("./app/routes/user.routes")(app);
+require("./app/routes/playlist.routes")(app);
+require("./app/routes/video.routes")(app);
+require("./app/routes/ad.routes")(app);
 
 app.listen(port, '0.0.0.0',() => {
   console.log (`listening on port ${port}`);