diff --git a/.github/ISSUE_TEMPLATE/feature_request.yml b/.github/ISSUE_TEMPLATE/feature_request.yml
index d70550c..1d03665 100644
--- a/.github/ISSUE_TEMPLATE/feature_request.yml
+++ b/.github/ISSUE_TEMPLATE/feature_request.yml
@@ -31,7 +31,7 @@ body:
     attributes:
       label: Problem or Need
       description: Is this feature related to solving a problem? Please describe.
-      placeholder: Example: I'm always frustrated when...
+      placeholder: "Example: I'm always frustrated when..."
     validations:
       required: true
 
diff --git a/.github/workflows/ci-backend.yml b/.github/workflows/ci-backend.yml
new file mode 100644
index 0000000..9041636
--- /dev/null
+++ b/.github/workflows/ci-backend.yml
@@ -0,0 +1,61 @@
+name: CI Backend
+
+on:
+  push:
+    branches: [main, dev]
+    paths:
+      - "backend/**"
+      - ".github/workflows/ci-backend.yml"
+  pull_request:
+    branches: [main, dev]
+    paths:
+      - "backend/**"
+      - ".github/workflows/ci-backend.yml"
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v5
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v5
+        with:
+          node-version: "22"
+          cache: "npm"
+          cache-dependency-path: backend/package-lock.json
+
+      - name: Install dependencies
+        working-directory: ./backend
+        run: npm ci
+
+      - name: Build project
+        working-directory: ./backend
+        run: npm run build
+
+  type-check:
+    name: Type Check
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v5
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v5
+        with:
+          node-version: "22"
+          cache: "npm"
+          cache-dependency-path: backend/package-lock.json
+
+      - name: Install dependencies
+        working-directory: ./backend
+        run: npm ci
+
+      - name: Type check
+        working-directory: ./backend
+        run: npx tsc --noEmit
diff --git a/.github/workflows/ci-infrastructure.yml b/.github/workflows/ci-infrastructure.yml
index b10d39a..e3e3281 100644
--- a/.github/workflows/ci-infrastructure.yml
+++ b/.github/workflows/ci-infrastructure.yml
@@ -38,7 +38,7 @@ jobs:
         working-directory: ./infrastructure
         run: npm run build
 
-  lint:
+  type-check:
     name: Type Check
     runs-on: ubuntu-latest
     steps:
diff --git a/README.md b/README.md
index 3521521..3e0e3a0 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,22 @@
 # Mostage Studio
 
 ![CI Frontend](https://github.com/mostage-app/studio/actions/workflows/ci-frontend.yml/badge.svg)
+![CI Backend](https://github.com/mostage-app/studio/actions/workflows/ci-backend.yml/badge.svg)
 ![CI Infrastructure](https://github.com/mostage-app/studio/actions/workflows/ci-infrastructure.yml/badge.svg)
+
 ![Next.js](https://img.shields.io/badge/Next.js-15.5.5-black?logo=next.js)
-![React](https://img.shields.io/badge/React-19.1.0-blue?logo=react)
-![TypeScript](https://img.shields.io/badge/TypeScript-5-blue?logo=typescript)
-![AWS CDK](https://img.shields.io/badge/AWS%20CDK-2.100.0-orange?logo=aws)
+![React](https://img.shields.io/badge/React-19.1.0-61DAFB?logo=react&logoColor=white)
+![TypeScript](https://img.shields.io/badge/TypeScript-5-3178C6?logo=typescript&logoColor=white)
+![Tailwind CSS](https://img.shields.io/badge/Tailwind%20CSS-4-38B2AC?logo=tailwind-css&logoColor=white)
+![Node.js](https://img.shields.io/badge/Node.js-20-339933?logo=node.js&logoColor=white)
+
+![AWS CDK](https://img.shields.io/badge/AWS%20CDK-2.100.0-FF9900?logo=amazon-aws&logoColor=white)
+![AWS Lambda](https://img.shields.io/badge/AWS%20Lambda-FF9900?logo=aws-lambda&logoColor=white)
+![AWS DynamoDB](https://img.shields.io/badge/AWS%20DynamoDB-FF9900?logo=amazon-dynamodb&logoColor=white)
+![AWS Cognito](https://img.shields.io/badge/AWS%20Cognito-FF9900?logo=amazon-aws&logoColor=white)
+![AWS API Gateway](https://img.shields.io/badge/AWS%20API%20Gateway-FF9900?logo=amazon-api-gateway&logoColor=white)
+![AWS S3](https://img.shields.io/badge/AWS%20S3-FF9900?logo=amazon-s3&logoColor=white)
+![AWS Amplify](https://img.shields.io/badge/AWS%20Amplify-FF9900?logo=aws-amplify&logoColor=white)
 
 Mostage Studio is a simple online tool for making presentations with Markdown and HTML. Some features include AI Creation, Live Polling System, and Audience Q&A.
 
diff --git a/backend/README.md b/backend/README.md
index 5d0d26f..4105887 100644
--- a/backend/README.md
+++ b/backend/README.md
@@ -4,7 +4,7 @@ Backend Lambda functions for Mostage Studio.
 
 ## Structure
 
-```
+```text
 backend/
   src/
     lambda/
@@ -93,3 +93,24 @@ Watch mode:
 ```bash
 npm run watch
 ```
+
+## CI/CD
+
+The backend has automated CI checks via GitHub Actions. The CI workflow runs on:
+
+- Push to `main` or `dev` branches when files in `backend/` change
+- Pull requests to `main` or `dev` branches when files in `backend/` change
+
+**CI Jobs**:
+
+- **Build**: Compiles TypeScript to JavaScript
+- **Type Check**: Validates TypeScript types
+
+To run CI checks locally:
+
+```bash
+npm run build
+npx tsc --noEmit
+```
+
+See [CI/CD Documentation](../docs/ci-cd.md) for more details.
diff --git a/docs/ci-cd.md b/docs/ci-cd.md
index f936d54..5ed7ee1 100644
--- a/docs/ci-cd.md
+++ b/docs/ci-cd.md
@@ -4,13 +4,13 @@ This document describes the Continuous Integration and Continuous Deployment (CI
 
 ## Overview
 
-The project uses GitHub Actions for automated testing, building, and deployment. There are three main workflows:
+The project uses GitHub Actions for automated testing, building, and deployment. There are three main CI workflows:
 
 1. **CI Frontend Workflow** - Runs on frontend changes
-2. **CI Infrastructure Workflow** - Runs on infrastructure changes
-3. **Deploy Frontend Workflow** - Deploys frontend to GitHub Pages
+2. **CI Backend Workflow** - Runs on backend changes
+3. **CI Infrastructure Workflow** - Runs on infrastructure changes
 
-**Note**: Infrastructure deployment is performed **manually** using AWS CDK commands locally. See [Infrastructure Setup](infrastructure.md) for deployment instructions.
+**Note**: Infrastructure deployment is performed **manually** using AWS CDK commands locally. Frontend deployment is handled by AWS Amplify (see `amplify.yml`). See [Infrastructure Setup](infrastructure.md) for deployment instructions.
 
 ## Workflows
 
@@ -47,75 +47,39 @@ The project uses GitHub Actions for automated testing, building, and deployment.
 
 **Location**: `.github/workflows/ci-infrastructure.yml`
 
-### 3. Deploy Frontend Workflow (`deploy-frontend.yml`)
+### 3. CI Backend Workflow (`ci-backend.yml`)
 
-**Purpose**: Deploys the frontend application to GitHub Pages
+**Purpose**: Automated validation for backend Lambda functions
 
 **Triggers**:
 
-- Push to `main` branch **only when files in `frontend/` change**
-- Manual trigger via `workflow_dispatch`
+- Push to `main` or `dev` branches **only when files in `backend/` change**
+- Pull requests to `main` or `dev` branches **only when files in `backend/` change**
 
-**Process**:
-
-1. Installs dependencies
-2. Builds the Next.js application (lint and type-check are handled by CI workflow)
-3. Uploads build artifacts
-4. Deploys to GitHub Pages
-
-**Note**: This workflow only builds and deploys. Lint and type-check are performed by the CI Frontend workflow to avoid duplicate work.
-
-**Environment Variables**:
-
-- `NEXT_PUBLIC_GA_MEASUREMENT_ID` (optional) - Google Analytics ID
-- `NEXT_PUBLIC_COGNITO_USER_POOL_ID_PROD` (required) - Production Cognito User Pool ID
-- `NEXT_PUBLIC_COGNITO_CLIENT_ID_PROD` (required) - Production Cognito Client ID
-- `NEXT_PUBLIC_AWS_REGION` (required) - AWS Region (e.g., `eu-central-1`)
-- `NEXT_PUBLIC_API_URL` (required) - API Gateway URL for backend services
+**Jobs**:
 
-**Note**: These environment variables must be set in GitHub Secrets (Settings → Secrets and variables → Actions) because Next.js requires them at build time for static export.
+- **Build**: Compiles TypeScript to JavaScript
+- **Type Check**: Validates TypeScript types
 
-**Location**: `.github/workflows/deploy-frontend.yml`
+**Location**: `.github/workflows/ci-backend.yml`
 
 ## GitHub Setup
 
 ### Required Secrets
 
-Go to **Settings → Secrets and variables → Actions** and add:
-
-#### For Frontend Deploy
-
-- `NEXT_PUBLIC_GA_MEASUREMENT_ID` (optional) - Google Analytics Measurement ID
-- `NEXT_PUBLIC_COGNITO_USER_POOL_ID_PROD` (required) - Production Cognito User Pool ID
-- `NEXT_PUBLIC_COGNITO_CLIENT_ID_PROD` (required) - Production Cognito Client ID
-- `NEXT_PUBLIC_AWS_REGION` (required) - AWS Region (e.g., `eu-central-1`)
-- `NEXT_PUBLIC_API_URL` (required) - API Gateway URL for backend services
-
-### Required Environments
-
-Go to **Settings → Environments** and create:
-
-#### `github-pages`
-
-- Usually created automatically
-- Used for frontend deployment
-
-### GitHub Pages Configuration
-
-Go to **Settings → Pages**:
-
-- **Source**: Select "GitHub Actions"
-- **Branch**: `main` (or your default branch)
+Currently, no GitHub Secrets are required for CI workflows. Environment variables for frontend builds are handled by AWS Amplify (see `amplify.yml`).
 
 ## Workflow Files
 
 ```text
 .github/workflows/
 ├── ci-frontend.yml            # Frontend CI checks (lint, type-check, build)
-├── ci-infrastructure.yml      # Infrastructure CI checks (validate, format)
-└── deploy-frontend.yml        # Frontend deployment to GitHub Pages
+├── ci-backend.yml             # Backend CI checks (build, type-check)
+└── ci-infrastructure.yml      # Infrastructure CI checks (build, type-check)
 ```
 
+**Note**: Frontend deployment is handled by AWS Amplify (see `amplify.yml` in the root directory).
+
 ## Usage
 
 ### Running CI Checks
@@ -123,20 +87,14 @@ Go to **Settings → Pages**:
 CI checks run automatically on:
 
 - **Frontend CI**: When files in `frontend/` change
+- **Backend CI**: When files in `backend/` change
 - **Infrastructure CI**: When files in `infrastructure/` change
 
-You can also manually trigger from **Actions → CI Frontend** or **Actions → CI Infrastructure**
+You can also manually trigger from **Actions → CI Frontend**, **Actions → CI Backend**, or **Actions → CI Infrastructure**
 
 ### Deploying Frontend
 
-Frontend deploys automatically when you push to `main` branch.
-
-To deploy manually:
-
-1. Go to **Actions → Deploy Frontend**
-2. Click **Run workflow**
-3. Select branch (usually `main`)
-4. Click **Run workflow**
+Frontend deployment is handled by AWS Amplify. See `amplify.yml` in the root directory for configuration.
 
 ### Deploying Infrastructure
 
@@ -202,24 +160,31 @@ See [Infrastructure Setup](infrastructure.md) for detailed instructions.
 - Check type check output in Actions logs
 - Type check locally: `cd infrastructure && npx tsc --noEmit`
 
-### Deploy Frontend Fails
+### CI Backend Workflow Fails
 
 **Build errors**:
 
-- Check if environment variables are set correctly
-- Verify `NEXT_PUBLIC_GA_MEASUREMENT_ID` is set (if using analytics)
+- Check build output in Actions logs
+- Build locally: `cd backend && npm run build`
 
-**Deployment errors**:
+**TypeScript type errors**:
 
-- Check GitHub Pages settings
-- Verify Pages source is set to "GitHub Actions"
+- Check type check output in Actions logs
+- Type check locally: `cd backend && npx tsc --noEmit`
 
 ## Best Practices
 
 1. **Always run CI locally** before pushing:
 
    ```bash
+   # Frontend
    cd frontend && npm run lint && npx tsc --noEmit && npm run build
+
+   # Backend
+   cd backend && npm run build && npx tsc --noEmit
+
+   # Infrastructure
+   cd infrastructure && npm run build && npx tsc --noEmit
    ```
 
 2. **Review CI results** before merging PRs