diff --git a/app/components/AllowConnectionForDeviceAlert.tsx b/app/components/AllowConnectionForDeviceAlert.tsx
index d6fe17b..4f8b9fb 100644
--- a/app/components/AllowConnectionForDeviceAlert.tsx
+++ b/app/components/AllowConnectionForDeviceAlert.tsx
@@ -32,7 +32,7 @@ export default function AllowConnectionForDeviceAlert(
         <Col>
           <Text>{`Device IP: `}</Text>
           <span id="allow-connection-device-alert-device-ip-span">
-            {device?.deviceIp}
+            {device?.deviceIP}
           </span>
         </Col>
       </Row>
@@ -43,12 +43,12 @@ export default function AllowConnectionForDeviceAlert(
       </Row>
       <Row>
         <Col>
-          <Text>{`Device OS: ${device?.deviceOs}`}</Text>
+          <Text>{`Device OS: ${device?.deviceOS}`}</Text>
         </Col>
       </Row>
       <Row>
         <Col>
-          <Text>{`session ID: ${device?.sessionId}`}</Text>
+          <Text>{`session ID: ${device?.sharingSessionID}`}</Text>
         </Col>
       </Row>
     </Alert>
diff --git a/app/components/ConnectedDevicesListDrawer.tsx b/app/components/ConnectedDevicesListDrawer.tsx
index eeccf17..dc966b4 100644
--- a/app/components/ConnectedDevicesListDrawer.tsx
+++ b/app/components/ConnectedDevicesListDrawer.tsx
@@ -165,11 +165,11 @@ export default function ConnectedDevicesListDrawer(
                       >
                         <Card>
                           <Text className="device-ip-container">
-                            {device.deviceIp}
+                            {device.deviceIP}
                           </Text>
                           <Text>{device.deviceType}</Text>
-                          <Text>{device.deviceOs}</Text>
-                          <Text>{device.sessionId}</Text>
+                          <Text>{device.deviceOS}</Text>
+                          <Text>{device.sharingSessionID}</Text>
                           <Button
                             intent="danger"
                             onClick={(): void => {
diff --git a/app/components/StepperPanel/DeviceConnectedInfoButton.tsx b/app/components/StepperPanel/DeviceConnectedInfoButton.tsx
index 872200f..0dd8765 100644
--- a/app/components/StepperPanel/DeviceConnectedInfoButton.tsx
+++ b/app/components/StepperPanel/DeviceConnectedInfoButton.tsx
@@ -19,11 +19,11 @@ const getDeviceConnectedPopoverContent = (
           <Col xs={12}>
             <H6>Connected Device:</H6>
             <Text>{`Type: ${pendingConnectionDevice?.deviceType}`}</Text>
-            <Text>{`OS: ${pendingConnectionDevice?.deviceOs}`}</Text>
+            <Text>{`OS: ${pendingConnectionDevice?.deviceOS}`}</Text>
             <div id="connected-button-popover-div-with-ip">
-              <Text>{`IP: ${pendingConnectionDevice?.deviceIp}`}</Text>
+              <Text>{`IP: ${pendingConnectionDevice?.deviceIP}`}</Text>
             </div>
-            <Text>{`SessionId: ${pendingConnectionDevice?.sessionId}`}</Text>
+            <Text>{`sharingSessionID: ${pendingConnectionDevice?.sharingSessionID}`}</Text>
           </Col>
         </Row>
         <Row>
diff --git a/app/components/StepperPanel/__snapshots__/DeviceConnectedInfoButton.spec.tsx.snap b/app/components/StepperPanel/__snapshots__/DeviceConnectedInfoButton.spec.tsx.snap
index c27580e..6730148 100644
--- a/app/components/StepperPanel/__snapshots__/DeviceConnectedInfoButton.spec.tsx.snap
+++ b/app/components/StepperPanel/__snapshots__/DeviceConnectedInfoButton.spec.tsx.snap
@@ -68,7 +68,7 @@ exports[`should match exact snapshot 1`] = `
                     </Blueprint3.Text>
                   </div>
                   <Blueprint3.Text>
-                    SessionId: undefined
+                    sharingSessionID: undefined
                   </Blueprint3.Text>
                 </Col>
               </Row>
diff --git a/app/components/StepsOfStepper/ConfirmStep.tsx b/app/components/StepsOfStepper/ConfirmStep.tsx
index 5d27af2..5c00a1b 100644
--- a/app/components/StepsOfStepper/ConfirmStep.tsx
+++ b/app/components/StepsOfStepper/ConfirmStep.tsx
@@ -16,9 +16,9 @@ export default function ConfirmStep(props: ConfirmStepProps) {
 
       <Card style={{ marginBottom: '10px' }}>
         <Text>{`Device: ${props.device?.deviceType}`}</Text>
-        <Text>{`Device IP: ${props.device?.deviceIp}`}</Text>
-        <Text>{`Device OS: ${props.device?.deviceOs}`}</Text>
-        <Text>{`Session ID: ${props.device?.sessionId}`}</Text>
+        <Text>{`Device IP: ${props.device?.deviceIP}`}</Text>
+        <Text>{`Device OS: ${props.device?.deviceOS}`}</Text>
+        <Text>{`Session ID: ${props.device?.sharingSessionID}`}</Text>
       </Card>
       <div style={{ marginBottom: '10px' }}>
         <Text className="bp3-text-muted">
diff --git a/app/constants/test-devices.json b/app/constants/test-devices.json
index 85ee3ea..40463ca 100644
--- a/app/constants/test-devices.json
+++ b/app/constants/test-devices.json
@@ -1,72 +1,72 @@
 [
   {
     "id": "123414",
-    "sessionId": "14422424",
-    "deviceOs": "Android",
+    "sharingSessionID": "14422424",
+    "deviceOS": "Android",
     "deviceType": "Mobile",
-    "deviceIp": "123.123.123.123"
+    "deviceIP": "123.123.123.123"
   },
   {
     "id": "1123",
-    "sessionId": "43",
-    "deviceOs": "IOS",
+    "sharingSessionID": "43",
+    "deviceOS": "IOS",
     "deviceType": "Mobile",
-    "deviceIp": "124.124.124.124"
+    "deviceIP": "124.124.124.124"
   },
   {
     "id": "2",
-    "sessionId": "22",
-    "deviceOs": "Windows",
+    "sharingSessionID": "22",
+    "deviceOS": "Windows",
     "deviceType": "PS",
-    "deviceIp": "255.255.124.124"
+    "deviceIP": "255.255.124.124"
   },
   {
     "id": "33",
-    "sessionId": "22",
-    "deviceOs": "Ubuntu",
+    "sharingSessionID": "22",
+    "deviceOS": "Ubuntu",
     "deviceType": "PC",
-    "deviceIp": "4.4.4.124"
+    "deviceIP": "4.4.4.124"
   },
   {
     "id": "414",
-    "sessionId": "423",
-    "deviceOs": "Blackberry",
+    "sharingSessionID": "423",
+    "deviceOS": "Blackberry",
     "deviceType": "Mobile",
-    "deviceIp": "224.224.224.124"
+    "deviceIP": "224.224.224.124"
   },
   {
     "id": "1133223",
-    "sessionId": "4133",
-    "deviceOs": "IOS",
+    "sharingSessionID": "4133",
+    "deviceOS": "IOS",
     "deviceType": "Mobile",
-    "deviceIp": "24.24.24.24"
+    "deviceIP": "24.24.24.24"
   },
   {
     "id": "1321123",
-    "sessionId": "44133",
-    "deviceOs": "Android",
+    "sharingSessionID": "44133",
+    "deviceOS": "Android",
     "deviceType": "Mobile",
-    "deviceIp": "14.14.14.14"
+    "deviceIP": "14.14.14.14"
   },
   {
     "id": "993",
-    "sessionId": "91322",
-    "deviceOs": "Debian",
+    "sharingSessionID": "91322",
+    "deviceOS": "Debian",
     "deviceType": "PC",
-    "deviceIp": "1.1.14.14"
+    "deviceIP": "1.1.14.14"
   },
   {
     "id": "7757",
-    "sessionId": "1111",
-    "deviceOs": "MacOS",
+    "sharingSessionID": "1111",
+    "deviceOS": "MacOS",
     "deviceType": "Mac",
-    "deviceIp": "12.12.14.14"
+    "deviceIP": "12.12.14.14"
   },
   {
     "id": "123332",
-    "sessionId": "323231",
-    "deviceOs": "MacOS",
+    "sharingSessionID": "323231",
+    "deviceOS": "MacOS",
     "deviceType": "Mac",
-    "deviceIp": "11.11.14.14"
+    "deviceIP": "11.11.14.14"
   }
 ]
diff --git a/app/containers/ConnectedDevicesProvider/Device.d.ts b/app/containers/ConnectedDevicesProvider/Device.d.ts
index af3f6df..6d5ec72 100644
--- a/app/containers/ConnectedDevicesProvider/Device.d.ts
+++ b/app/containers/ConnectedDevicesProvider/Device.d.ts
@@ -1,7 +1,7 @@
 interface Device {
   id: string;
-  sessionId: string;
-  deviceOs: string;
+  sharingSessionID: string;
+  deviceOS: string;
   deviceType: string;
-  deviceIp: string;
+  deviceIP: string;
 }
diff --git a/app/features/SharingSessionsService/SharingSession.spec.ts b/app/features/SharingSessionsService/SharingSession.spec.ts
new file mode 100644
index 0000000..209e6be
--- /dev/null
+++ b/app/features/SharingSessionsService/SharingSession.spec.ts
@@ -0,0 +1,34 @@
+import SharingSessionService from '.';
+import SharingType from './SharingType';
+
+jest.useFakeTimers();
+
+describe('SharingSession unit tests', () => {
+  let sharingSession: SharingSessionService;
+
+  beforeEach(() => {
+    sharingSession = new SharingSessionService();
+  });
+
+  afterEach(() => {
+    jest.clearAllMocks();
+  });
+
+  describe('when new SahringSession() is called', () => {
+    it('should create sharing session with id', () => {
+      expect(sharingSession.id).toBeTruthy();
+    });
+
+    it('should crete sharing session with deviceID equal to "" ', () => {
+      expect(sharingSession.deviceID).toBe('');
+    });
+
+    it('should create sharing session with sharingType equal to NOT_SET', () => {
+      expect(sharingSession.sharingType).toBe(SharingType.NOT_SET);
+    });
+
+    it('should create sharing session with sharingStream set to null', () => {
+      expect(sharingSession.sharingStream).toBe(null);
+    });
+  });
+});
diff --git a/app/features/SharingSessionsService/SharingSessionServiceType.d.ts b/app/features/SharingSessionsService/SharingSessionServiceType.d.ts
new file mode 100644
index 0000000..af66d37
--- /dev/null
+++ b/app/features/SharingSessionsService/SharingSessionServiceType.d.ts
@@ -0,0 +1,33 @@
+import SharingType from './SharingType';
+
+export default interface SharingSessionType {
+  id: string;
+  deviceID: string;
+  sharingType: SharingType;
+  sharingStream: MediaStream | null;
+  roomID: string;
+  connectedDeviceAt: Date;
+  sharingStartedAt: Date;
+  status: SharingSessionStatus;
+  statusObserverCallbacks: SharingSessionStatusObserverCallback[];
+  notifyStatusObservers: () => void;
+  updateStatus: (newStatus: SharingSessionStatus) => void;
+  setDevice: (id: string) => void; // updates connectedDeviceAt with timestamp
+  setSharingStream: (stream: MediaStream) => void;
+  getSharingStreamForUsage: () => MediaStream;
+  setSharingType: (type: SharingType) => void;
+  addStatusObserverCallback: (
+    callback: SharingSessionStatusObserverCallback
+  ) => void;
+}
+
+export enum SharingSessionStatus {
+  NOT_CONNECTED,
+  CONNECTED,
+  SHARING,
+  ERROR,
+}
+
+export type SharingSessionStatusObserverCallback = (
+  sharingSessionID: string
+) => void;
diff --git a/app/features/SharingSessionsService/SharingSessionsService.ts b/app/features/SharingSessionsService/SharingSessionsService.ts
new file mode 100644
index 0000000..5565f83
--- /dev/null
+++ b/app/features/SharingSessionsService/SharingSessionsService.ts
@@ -0,0 +1,6 @@
+interface SharingSessionService {
+  sharingSessions: SharingSession[];
+  createNewSharingSession: () => SharingSession;
+  pollForInactiveSessions: () => void;
+  getSharingSessionByID: (id: string) => SharingSession;
+}
diff --git a/app/features/SharingSessionsService/SharingType.ts b/app/features/SharingSessionsService/SharingType.ts
new file mode 100644
index 0000000..f3050ff
--- /dev/null
+++ b/app/features/SharingSessionsService/SharingType.ts
@@ -0,0 +1,7 @@
+enum SharingType {
+  NOT_SET,
+  SCREEN,
+  APP,
+}
+
+export default SharingType;
diff --git a/app/features/SharingSessionsService/index.ts b/app/features/SharingSessionsService/index.ts
new file mode 100644
index 0000000..7c763df
--- /dev/null
+++ b/app/features/SharingSessionsService/index.ts
@@ -0,0 +1,36 @@
+/* eslint-disable @typescript-eslint/lines-between-class-members */
+import uuid from 'uuid';
+import SharingSessionServiceType, {
+  SharingSessionStatus,
+  SharingSessionStatusObserverCallback,
+} from './SharingSessionServiceType';
+import SharingType from './SharingType';
+
+export default class SharingSessionService
+  implements SharingSessionServiceType {
+  id: string;
+  deviceID: string;
+  sharingType: SharingType;
+  sharingStream: MediaStream | null;
+  roomID: string;
+  connectedDeviceAt: Date;
+  sharingStartedAt: Date;
+  status: SharingSessionStatus;
+  statusObserverCallbacks: SharingSessionStatusObserverCallback[];
+  notifyStatusObservers: () => void;
+  updateStatus: (newStatus: SharingSessionStatus) => void;
+  setDevice: (id: string) => void;
+  setSharingStream: (stream: MediaStream) => void;
+  getSharingStreamForUsage: () => MediaStream;
+  setSharingType: (type: SharingType) => void;
+  addStatusObserverCallback: (
+    callback: SharingSessionStatusObserverCallback
+  ) => void;
+
+  constructor() {
+    this.id = uuid.v4();
+    this.deviceID = '';
+    this.sharingType = SharingType.NOT_SET;
+    this.sharingStream = null;
+  }
+}
diff --git a/app/server/roomIDService.ts b/app/server/roomIDService.ts
new file mode 100644
index 0000000..f90dd72
--- /dev/null
+++ b/app/server/roomIDService.ts
@@ -0,0 +1,49 @@
+/* eslint-disable class-methods-use-this */
+const shortID = require('shortid');
+
+class RoomIDService {
+  private static instance: RoomIDService;
+
+  private nextAvailableRoomIDNumber: number;
+
+  private takenRoomIDs: Set<string>;
+
+  constructor() {
+    this.takenRoomIDs = new Set<string>();
+    // TODO: load saved taken room ids from local storage, will be useful for saved devices feature in FUTURE
+    this.nextAvailableRoomIDNumber = 1;
+  }
+
+  public getSimpleAvailableRoomID(): string {
+    while (this.takenRoomIDs.has(`${this.nextAvailableRoomIDNumber}`)) {
+      this.nextAvailableRoomIDNumber += 1;
+    }
+    return `${this.nextAvailableRoomIDNumber}`;
+  }
+
+  public getShortIDStringOfAvailableRoom(): string {
+    let newID = shortID();
+    while (this.takenRoomIDs.has(newID)) {
+      newID = shortID();
+    }
+    return shortID();
+  }
+
+  public markRoomIDAsTaken(id: string) {
+    this.takenRoomIDs.add(id);
+  }
+
+  public unmarkRoomIDAsTaken(id: string) {
+    this.takenRoomIDs.delete(id);
+  }
+
+  public static getInstance(): RoomIDService {
+    if (!RoomIDService.instance) {
+      RoomIDService.instance = new RoomIDService();
+    }
+
+    return RoomIDService.instance;
+  }
+}
+
+export default RoomIDService.getInstance();
diff --git a/package.json b/package.json
index 4a0b845..bea2953 100644
--- a/package.json
+++ b/package.json
@@ -242,6 +242,7 @@
     "@types/shortid": "^0.0.29",
     "@types/socket.io": "^2.1.11",
     "@types/socket.io-client": "^1.4.33",
+    "@types/uuid": "^8.3.0",
     "@types/webpack": "^4.41.21",
     "@types/webpack-env": "^1.15.2",
     "@typescript-eslint/eslint-plugin": "^3.6.1",
diff --git a/test/ux/Stepper.ux.ts b/test/ux/Stepper.ux.ts
index 8dfa59f..89baa22 100644
--- a/test/ux/Stepper.ux.ts
+++ b/test/ux/Stepper.ux.ts
@@ -26,7 +26,7 @@ const largeQRCodeDialog = Selector('#qr-code-dialog-inner');
 const connectedInfoStepperButton = Selector(
   '#connected-device-info-stepper-button'
 );
-const popoverDivWithDeviceIP = Selector(
+const popoverDivWithdeviceIP = Selector(
   '#connected-button-popover-div-with-ip'
 );
 const disconnectOneDeviceButton = Selector('button').withExactText(
@@ -58,7 +58,7 @@ const connectedDevicesButton = Selector(
 const connectedDevicesHeader = Selector('.bp3-text-muted').withText(
   'Connected Devices'
 );
-const getDeviceIPContainerByIP = (ip) =>
+const getdeviceIPContainerByIP = (ip) =>
   Selector('.device-ip-container').withText(ip);
 const yesDisconnectAllButton = Selector('button').withText(
   'Yes, Disconnect All'
@@ -69,7 +69,7 @@ const darkColorAppSettingButton = Selector('button').withText('Dark');
 const lightColorAppSettingButton = Selector('button').withText('Light');
 const darkUIClassName = Selector('.bp3-dark');
 
-async function getConnectedDeviceIPFromAllowToConnectDeviceAlert() {
+async function getConnecteddeviceIPFromAllowToConnectDeviceAlert() {
   const deviceIPTextElement = Selector(
     '#allow-connection-device-alert-device-ip-span'
   );
@@ -80,7 +80,7 @@ async function getConnectedDeviceIPFromAllowToConnectDeviceAlert() {
 // eslint-disable-next-line @typescript-eslint/no-unused-vars
 async function connectTestDeviceAndGetIP(t) {
   await t.click(connectTestDeviceButton());
-  return getConnectedDeviceIPFromAllowToConnectDeviceAlert();
+  return getConnecteddeviceIPFromAllowToConnectDeviceAlert();
 }
 
 async function connectTestDevice(t) {
@@ -89,7 +89,7 @@ async function connectTestDevice(t) {
 
 async function connectAndAllowTestDeviceAndGetIP(t) {
   await connectTestDevice(t);
-  const ip = getConnectedDeviceIPFromAllowToConnectDeviceAlert();
+  const ip = getConnecteddeviceIPFromAllowToConnectDeviceAlert();
   await t.click(allowToConnectButton());
   return ip;
 }
@@ -246,7 +246,7 @@ test(`when on step 2,
   const ip = await connectAndAllowTestDeviceAndGetIP(t);
   await openConnectedDeviceInfoPopover(t);
 
-  const textWithIp = await popoverDivWithDeviceIP().innerText;
+  const textWithIp = await popoverDivWithdeviceIP().innerText;
   await t.expect(textWithIp.includes(ip)).ok();
 });
 
@@ -375,7 +375,7 @@ test(`when on step 4 (Success Step),
   const ip = await connectDeviceSharingAppWindowAndGetIP(t);
   await openConnectedDevicesListDrawer(t);
 
-  await t.expect(getDeviceIPContainerByIP(ip).exists).ok();
+  await t.expect(getdeviceIPContainerByIP(ip).exists).ok();
 });
 
 test(`when multiple devices are connected,
@@ -390,10 +390,10 @@ test(`when multiple devices are connected,
 
   await openConnectedDevicesListDrawer(t);
 
-  await t.expect(getDeviceIPContainerByIP(ipOne).exists).ok();
-  await t.expect(getDeviceIPContainerByIP(ipTwo).exists).ok();
-  await t.expect(getDeviceIPContainerByIP(ipThree).exists).ok();
-  await t.expect(getDeviceIPContainerByIP(ipFour).exists).ok();
+  await t.expect(getdeviceIPContainerByIP(ipOne).exists).ok();
+  await t.expect(getdeviceIPContainerByIP(ipTwo).exists).ok();
+  await t.expect(getdeviceIPContainerByIP(ipThree).exists).ok();
+  await t.expect(getdeviceIPContainerByIP(ipFour).exists).ok();
 });
 
 test(`when device is connected,
@@ -405,7 +405,7 @@ test(`when device is connected,
   await openConnectedDevicesListDrawer(t);
   await t.click(disconnectOneDeviceButton());
 
-  await t.expect(getDeviceIPContainerByIP(ip).exists).notOk();
+  await t.expect(getdeviceIPContainerByIP(ip).exists).notOk();
 });
 
 test(`when multiple devices are connected,
@@ -425,10 +425,10 @@ test(`when multiple devices are connected,
 
   await openConnectedDevicesListDrawer(t);
 
-  await t.expect(getDeviceIPContainerByIP(ipOne).exists).notOk();
-  await t.expect(getDeviceIPContainerByIP(ipTwo).exists).notOk();
-  await t.expect(getDeviceIPContainerByIP(ipThree).exists).notOk();
-  await t.expect(getDeviceIPContainerByIP(ipFour).exists).notOk();
+  await t.expect(getdeviceIPContainerByIP(ipOne).exists).notOk();
+  await t.expect(getdeviceIPContainerByIP(ipTwo).exists).notOk();
+  await t.expect(getdeviceIPContainerByIP(ipThree).exists).notOk();
+  await t.expect(getdeviceIPContainerByIP(ipFour).exists).notOk();
 });
 
 test(`when device is connected,
diff --git a/yarn.lock b/yarn.lock
index bbf1583..027a1d6 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2193,6 +2193,11 @@
   resolved "https://packages.deskreen.com/@types%2funist/-/unist-2.0.3.tgz#9c088679876f374eb5983f150d4787aa6fb32d7e"
   integrity sha512-FvUupuM3rlRsRtCN+fDudtmytGO6iHJuuRKS1Ss0pG5z8oX0diNEw94UEL7hgDbpN94rgaK5R7sWm6RrSkZuAQ==
 
+"@types/uuid@^8.3.0":
+  version "8.3.0"
+  resolved "https://packages.deskreen.com/@types%2fuuid/-/uuid-8.3.0.tgz#215c231dff736d5ba92410e6d602050cce7e273f"
+  integrity sha512-eQ9qFW/fhfGJF8WKHGEHZEyVWfZxrT+6CLIJGBcZPfxUh/+BnEj+UCGYMlr9qZuX/2AltsvwrGqp0LhEW8D0zQ==
+
 "@types/webpack-env@^1.15.2":
   version "1.15.2"
   resolved "https://packages.deskreen.com/@types%2fwebpack-env/-/webpack-env-1.15.2.tgz#927997342bb9f4a5185a86e6579a0a18afc33b0a"