---
# System prepended metadata

title: YA Zone 5 Volunteer Management Platform - Technical Specification

---

# YA Zone 5 Volunteer Management Platform - Technical Specification

## 1. Project Overview

**Project Name:** YA Zone 5 Connect - Volunteer Management Platform  
**Organization:** Young Adult (YA) - Zone 5  
**Target Users:** 15,000 volunteers across Zone 5  
**Project Goal:** Comprehensive digital platform for dual-hierarchy volunteer management

## 2. Organizational Structure

### 2.1 Dual Hierarchy System

```mermaid
graph TD
    A[Zone Coordinator - Zone 5] --> B[Geographic Structure]
    A --> C[Departmental Structure]
    
    B --> D[Sector Coordinator 1]
    B --> E[Sector Coordinator 2]
    B --> F[Sector Coordinator N]
    
    D --> G[Center 1]
    D --> H[Center 2]
    D --> I[Centers 3-7]
    
    E --> J[Center 8]
    E --> K[Center 9]
    E --> L[Centers 10-14]
    
    G --> M[Volunteers]
    H --> M
    I --> M
    J --> M
    K --> M
    L --> M
    
    C --> N[FC - IT Team]
    C --> O[FC - Creative Team]
    C --> P[FC - 28 Other Depts]
    
    N --> Q[Team Lead 1]
    N --> R[Team Lead 2]
    O --> S[Team Lead 3]
    
    Q --> T[Cross-Location Volunteers]
    R --> T
    S --> T
    P --> T
    
    style A fill:#ff9999
    style B fill:#99ccff
    style C fill:#99ff99
    style M fill:#ffcc99
    style T fill:#ffcc99
```

**Geographic Hierarchy:**
- **Zone Coordinator** (Zone 5)
- **Sector Coordinators** (Managing 5-7 centers each)
- **Center Coordinators** (Individual center management)
- **Volunteers** (Center-based, every volunteer must have center affiliation)

**Departmental Hierarchy:**
- **Zone Coordinator** (Overall oversight)
- **Functional Coordinators (FCs)** (30 departments - IT, Creative, Media, Events, etc.)
- **Team Leads (TLs)** (Internal department teams)
- **Volunteers** (Cross-location, primary + secondary department affiliations)

### 2.2 Key Rules
- Every volunteer MUST be affiliated with a center
- Volunteers can have primary + secondary department affiliations
- FCs report to Zone Coordinators
- Zone Coordinators cannot be FCs
- Center Coordinators have authority over center matters
- FCs have authority over departmental matters

## 3. User Roles & Detailed Permissions

### 3.1 Role Definitions

**Zone Coordinator:**
- Complete oversight of Zone 5 (geographic + departmental)
- Can see all data across centers and departments
- Approval authority for department join/leave requests
- Can broadcast to entire zone

**Sector Coordinator:**
- Manages 5-7 centers within their sector
- Geographic focus with cross-district scope
- Approval authority for profile changes
- Can broadcast to sector volunteers

**Center Coordinator:**
- Manages individual center
- Direct interface with center volunteers
- Approval authority for profile changes (first level)
- Can create center-specific activities
- Provides volunteer ratings (1-5 + review)

**Functional Coordinator (FC):**
- Heads specific department (1 of 30 departments)
- Manages volunteers across all locations
- Can create department-specific activities
- Provides volunteer ratings for department work
- Approval authority for department join/leave requests

**Team Lead (TL):**
- Leads internal teams within departments
- Reports to FCs
- Can mark attendance for team activities
- Limited volunteer management within team scope

**Volunteer:**
- Base level user with center + department affiliations
- Can view own profile and request changes
- Can request to join/leave departments
- Receives notifications and activity assignments

### 3.2 Permission Matrix

```
Feature                          | Vol | TL | CC | SC | FC | ZC | Admin
---------------------------------|-----|----|----|----|----|----|----- 
View Own Profile                 | ✓   | ✓  | ✓  | ✓  | ✓  | ✓  | ✓
Edit Own Profile (Approval Req.) | ✓   | ✓  | ✓  | ✓  | ✓  | ✓  | ✓
View Center Team Members         | ✗   | ✗  | ✓  | ✓  | ✗  | ✓  | ✓
View Department Team Members     | ✗   | ✓  | ✗  | ✗  | ✓  | ✓  | ✓
Create Center Activities         | ✗   | ✗  | ✓  | ✓  | ✗  | ✓  | ✓
Create Department Activities     | ✗   | ✓  | ✗  | ✗  | ✓  | ✓  | ✓
Mark Attendance                  | ✗   | ✓  | ✓  | ✓  | ✓  | ✓  | ✓
Rate Volunteers                  | ✗   | ✗  | ✓  | ✗  | ✓  | ✓  | ✓
View Ratings (Others)            | ✗   | ✗  | ✓  | ✗  | ✓  | ✓  | ✓
Approve Profile Changes          | ✗   | ✗  | ✓  | ✓  | ✗  | ✓  | ✓
Approve Dept Join/Leave          | ✗   | ✗  | ✗  | ✗  | ✓  | ✓  | ✓
View Center Reports              | ✗   | ✗  | ✓  | ✓  | ✗  | ✓  | ✓
View Department Reports          | ✗   | ✗  | ✗  | ✗  | ✓  | ✓  | ✓
View Zone-wide Reports           | ✗   | ✗  | ✗  | ✗  | ✗  | ✓  | ✓
Broadcast Messages               | ✗   | ✗  | ✓  | ✓  | ✓  | ✓  | ✓
Export Data                      | ✗   | ✗  | ✓  | ✓  | ✓  | ✓  | ✓
User Management                  | ✗   | ✗  | ✗  | ✗  | ✗  | Limited| ✓
```

## 4. Core Platform Features

### 4.1 Landing Page & Statistics

**Real-time Statistics Display:**
- Total volunteers in Zone 5 (15,000+)
- Active volunteers this month
- Center count across UP & Uttarakhand
- Department count (30)
- Recent activities completed
- Upcoming events
- Zone 5 achievements

**Additional Features:**
- YA/SKRM branding
- Login call-to-action
- About Zone 5 section
- Mobile-responsive design

### 4.2 Authentication System

**Login Process:**
1. User enters YA ID (numeric, auto-assigned)
2. System validates YA ID in database
3. 6-digit OTP sent to registered mobile
4. OTP verification (5-minute expiry)
5. JWT token generation
6. Role-based dashboard redirect

**Key Features:**
- No manual registration UI (volunteers added via API)
- Session sharing across multiple devices allowed
- No session timeout
- Audit logging for all login attempts

### 4.3 Combined Dashboard

**Unified View Components:**
- Personal summary (role, affiliations, recent activities)
- Upcoming activities (both center and department)
- Recent notifications and announcements
- Quick stats relevant to user role
- Pending approvals (for coordinators)
- Action buttons based on permissions

**Role-specific Widgets:**
- **Volunteers:** My activities, my ratings summary
- **Coordinators:** Team overview, pending tasks
- **Zone Coordinator:** Zone-wide metrics, all reports access

### 4.4 Profile Management

**Personal Information:**
- Full Name, YA ID (read-only), Mobile, Email
- Date of Birth, Gender, Profile Picture
- Complete Address (District, State)
- Emergency Contact, Blood Group

**Organizational Information:**
- Date of Joining YA
- Current Role/Position
- Zone Assignment (Zone 5)
- Sector Assignment (if applicable)
- Center Affiliation (mandatory)
- Primary Department Assignment
- Secondary Department Assignments
- Team Assignments (if applicable)
- Volunteer Level/Grade

**Change Approval Workflow:**
1. Volunteer requests change
2. Center Coordinator approval
3. Sector Coordinator approval
4. Change implemented
5. Notification to all parties

### 4.5 Activity Management

**Activity Types:**
- Center-based activities (seva, satsang, meetings)
- Department activities (projects, training, coordination)
- Zone-wide events
- Recurring activities support

**Activity Features:**
- Category classification
- Date, time, venue management
- Participant listing
- RSVP functionality
- Activity history
- Search and filter options

**Creation Rules:**
- Center Coordinators: Center activities only
- FCs: Department activities only
- Zone Coordinators: All activity types
- Team Leads: Team-specific activities

### 4.6 Attendance & Rating System

**Attendance Management:**
- Date and place selection
- Volunteer name selection from lists
- Offline marking with sync button
- Bulk attendance marking support
- Pending sync indicator
- Conflict resolution for multiple entries

**Rating System:**
- 1-5 star rating scale
- Text review/comments
- Center Coordinators rate center participation
- FCs rate department participation
- Rating history and analytics
- Coordinators can view all ratings
- Volunteers cannot see their ratings

### 4.7 Approval Management

**Profile Change Approvals:**
- Queue of pending approvals
- Approval/rejection with comments
- Email/SMS notifications for requests
- No auto-approval system
- Complete audit trail

**Department Join/Leave Requests:**
- FC and Zone Coordinator dual approval required
- Request reason and approval comments
- Status tracking for volunteers

### 4.8 Communication & Broadcasting

**Broadcasting Features:**
- Zone Coordinator: Zone-wide broadcasts
- Sector Coordinator: Sector-wide broadcasts
- Center Coordinator: Center broadcasts
- FC: Department broadcasts
- Message templates + free text
- SMS and email delivery
- No scheduling (future phase)
- No message limits

**Contact Information:**
- Name and phone number display
- No direct messaging system
- Directory based on user permissions

### 4.9 Reports & Analytics

**Report Types:**
- **Center Reports:** Weekly, monthly, yearly
- **Department Reports:** Weekly, monthly, yearly
- **Zone Reports:** Weekly, monthly, yearly
- **Custom Reports:** Coordinators only

**Report Features:**
- Visual charts and graphs
- Screen viewing with export options
- PDF and Excel export
- Auto-generation and email delivery
- On-demand generation
- Historical data comparison

**Auto-delivery Schedule:**
- Weekly reports: Every Monday
- Monthly reports: 1st of each month
- Delivered to relevant coordinators automatically

### 4.10 Data Import/Export

**Import Features:**
- Volunteer data from spreadsheets
- Bulk attendance import
- Activity data import
- Excel/CSV format support

**Export Features:**
- Complete volunteer lists
- Activity reports
- Attendance records
- Custom data exports
- API endpoints for external integration

## 5. Technical Architecture

### 5.1 Technology Stack
- **Frontend:** React.js with TypeScript, Tailwind CSS
- **Backend:** python
- **Database:** PostgreSQL with Redis caching
- **File Storage:** AWS S3 for documents and images
- **SMS Service:** Fast2SMS or MSG91 for OTP delivery
- **Authentication:** JWT with OTP verification
- **Hosting:** AWS EC2 with load balancer
- **CDN:** CloudFront for static assets

### 5.2 Database Schema

```mermaid
erDiagram
    USERS {
        uuid id PK
        varchar ya_id UK
        varchar full_name
        varchar mobile UK
        varchar email
        date date_of_birth
        enum gender
        varchar profile_picture
        text address
        varchar district
        varchar state
        varchar emergency_contact
        varchar blood_group
        date date_joined
        enum role
        enum status
        timestamp created_at
        timestamp updated_at
    }
    
    ZONES {
        uuid id PK
        varchar name
        varchar code UK
        uuid coordinator_id FK
        timestamp created_at
    }
    
    SECTORS {
        uuid id PK
        varchar name
        uuid zone_id FK
        uuid coordinator_id FK
        timestamp created_at
    }
    
    CENTERS {
        uuid id PK
        varchar name
        varchar skrm_center_code
        text address
        varchar district
        varchar state
        uuid sector_id FK
        uuid coordinator_id FK
        timestamp created_at
    }
    
    DEPARTMENTS {
        uuid id PK
        varchar name
        text description
        uuid fc_id FK
        uuid zone_id FK
        timestamp created_at
    }
    
    TEAMS {
        uuid id PK
        varchar name
        uuid department_id FK
        uuid team_lead_id FK
        timestamp created_at
    }
    
    USER_AFFILIATIONS {
        uuid id PK
        uuid user_id FK
        uuid center_id FK
        uuid department_id FK
        uuid team_id FK
        enum affiliation_type
        timestamp created_at
    }
    
    ACTIVITIES {
        uuid id PK
        varchar title
        text description
        varchar category
        enum activity_type
        varchar venue
        timestamp start_datetime
        timestamp end_datetime
        boolean is_recurring
        json recurrence_pattern
        uuid created_by FK
        uuid target_center_id FK
        uuid target_department_id FK
        uuid target_team_id FK
        enum status
        timestamp created_at
        timestamp updated_at
    }
    
    ATTENDANCE {
        uuid id PK
        uuid activity_id FK
        uuid user_id FK
        uuid marked_by FK
        date attendance_date
        varchar place
        enum status
        boolean is_synced
        timestamp created_at
    }
    
    RATINGS {
        uuid id PK
        uuid user_id FK
        uuid rated_by FK
        uuid activity_id FK
        int rating
        text review_text
        enum rating_type
        timestamp created_at
    }
    
    APPROVAL_REQUESTS {
        uuid id PK
        uuid user_id FK
        enum request_type
        json current_data
        json requested_data
        text reason
        enum status
        uuid approved_by FK
        text approval_comments
        timestamp created_at
        timestamp updated_at
    }
    
    BROADCASTS {
        uuid id PK
        uuid sender_id FK
        varchar title
        text message
        enum target_type
        uuid target_id
        enum delivery_method
        enum status
        timestamp sent_at
        timestamp created_at
    }
    
    AUDIT_LOGS {
        uuid id PK
        uuid user_id FK
        varchar action
        varchar entity_type
        uuid entity_id
        json old_data
        json new_data
        inet ip_address
        text user_agent
        timestamp created_at
    }
    
    ZONES ||--o{ SECTORS : contains
    SECTORS ||--o{ CENTERS : contains
    ZONES ||--o{ DEPARTMENTS : belongs_to
    DEPARTMENTS ||--o{ TEAMS : contains
    
    USERS ||--o{ ZONES : coordinates
    USERS ||--o{ SECTORS : coordinates
    USERS ||--o{ CENTERS : coordinates
    USERS ||--o{ DEPARTMENTS : leads
    USERS ||--o{ TEAMS : leads
    
    USERS ||--o{ USER_AFFILIATIONS : has
    CENTERS ||--o{ USER_AFFILIATIONS : contains
    DEPARTMENTS ||--o{ USER_AFFILIATIONS : includes
    TEAMS ||--o{ USER_AFFILIATIONS : includes
    
    USERS ||--o{ ACTIVITIES : creates
    ACTIVITIES ||--o{ ATTENDANCE : tracks
    ACTIVITIES ||--o{ RATINGS : receives
    
    USERS ||--o{ ATTENDANCE : marks
    USERS ||--o{ RATINGS : gives
    USERS ||--o{ APPROVAL_REQUESTS : requests
    USERS ||--o{ BROADCASTS : sends
    USERS ||--o{ AUDIT_LOGS : generates
```

**Core Tables:**
```sql
-- Users and Authentication
users (
  id: UUID PRIMARY KEY,
  ya_id: VARCHAR(20) UNIQUE NOT NULL,
  full_name: VARCHAR(100) NOT NULL,
  mobile: VARCHAR(15) UNIQUE NOT NULL,
  email: VARCHAR(100),
  date_of_birth: DATE,
  gender: ENUM('Male', 'Female', 'Other'),
  profile_picture: VARCHAR(255),
  address: TEXT,
  district: VARCHAR(50),
  state: VARCHAR(50),
  emergency_contact: VARCHAR(15),
  blood_group: VARCHAR(10),
  date_joined: DATE,
  role: ENUM('volunteer', 'team_lead', 'center_coordinator', 'sector_coordinator', 'fc', 'zone_coordinator', 'admin'),
  status: ENUM('active', 'inactive', 'suspended'),
  created_at: TIMESTAMP,
  updated_at: TIMESTAMP
)

-- Organizational Structure
zones (
  id: UUID PRIMARY KEY,
  name: VARCHAR(100) NOT NULL,
  code: VARCHAR(10) UNIQUE,
  coordinator_id: UUID REFERENCES users(id),
  created_at: TIMESTAMP
)

sectors (
  id: UUID PRIMARY KEY,
  name: VARCHAR(100) NOT NULL,
  zone_id: UUID REFERENCES zones(id),
  coordinator_id: UUID REFERENCES users(id),
  created_at: TIMESTAMP
)

centers (
  id: UUID PRIMARY KEY,
  name: VARCHAR(100) NOT NULL,
  skrm_center_code: VARCHAR(20),
  address: TEXT,
  district: VARCHAR(50),
  state: VARCHAR(50),
  sector_id: UUID REFERENCES sectors(id),
  coordinator_id: UUID REFERENCES users(id),
  created_at: TIMESTAMP
)

departments (
  id: UUID PRIMARY KEY,
  name: VARCHAR(100) NOT NULL,
  description: TEXT,
  fc_id: UUID REFERENCES users(id),
  zone_id: UUID REFERENCES zones(id),
  created_at: TIMESTAMP
)

teams (
  id: UUID PRIMARY KEY,
  name: VARCHAR(100) NOT NULL,
  department_id: UUID REFERENCES departments(id),
  team_lead_id: UUID REFERENCES users(id),
  created_at: TIMESTAMP
)

-- User Affiliations
user_affiliations (
  id: UUID PRIMARY KEY,
  user_id: UUID REFERENCES users(id),
  center_id: UUID REFERENCES centers(id), -- Mandatory
  department_id: UUID REFERENCES departments(id),
  team_id: UUID REFERENCES teams(id),
  affiliation_type: ENUM('primary', 'secondary'),
  created_at: TIMESTAMP
)

-- Activities and Events
activities (
  id: UUID PRIMARY KEY,
  title: VARCHAR(200) NOT NULL,
  description: TEXT,
  category: VARCHAR(50),
  activity_type: ENUM('center', 'department', 'zone', 'team'),
  venue: VARCHAR(200),
  start_datetime: TIMESTAMP,
  end_datetime: TIMESTAMP,
  is_recurring: BOOLEAN DEFAULT FALSE,
  recurrence_pattern: JSON,
  created_by: UUID REFERENCES users(id),
  target_center_id: UUID REFERENCES centers(id),
  target_department_id: UUID REFERENCES departments(id),
  target_team_id: UUID REFERENCES teams(id),
  status: ENUM('planned', 'ongoing', 'completed', 'cancelled'),
  created_at: TIMESTAMP,
  updated_at: TIMESTAMP
)

-- Attendance and Ratings
attendance (
  id: UUID PRIMARY KEY,
  activity_id: UUID REFERENCES activities(id),
  user_id: UUID REFERENCES users(id),
  marked_by: UUID REFERENCES users(id),
  attendance_date: DATE,
  place: VARCHAR(200),
  status: ENUM('present', 'absent', 'late'),
  is_synced: BOOLEAN DEFAULT TRUE,
  created_at: TIMESTAMP
)

ratings (
  id: UUID PRIMARY KEY,
  user_id: UUID REFERENCES users(id),
  rated_by: UUID REFERENCES users(id),
  activity_id: UUID REFERENCES activities(id),
  rating: INTEGER CHECK (rating >= 1 AND rating <= 5),
  review_text: TEXT,
  rating_type: ENUM('center_performance', 'department_performance'),
  created_at: TIMESTAMP
)

-- Approval Workflows
approval_requests (
  id: UUID PRIMARY KEY,
  user_id: UUID REFERENCES users(id),
  request_type: ENUM('profile_change', 'department_join', 'department_leave'),
  current_data: JSON,
  requested_data: JSON,
  reason: TEXT,
  status: ENUM('pending', 'approved', 'rejected'),
  approved_by: UUID REFERENCES users(id),
  approval_comments: TEXT,
  created_at: TIMESTAMP,
  updated_at: TIMESTAMP
)

-- Communications
broadcasts (
  id: UUID PRIMARY KEY,
  sender_id: UUID REFERENCES users(id),
  title: VARCHAR(200),
  message: TEXT,
  target_type: ENUM('zone', 'sector', 'center', 'department', 'team'),
  target_id: UUID,
  delivery_method: ENUM('sms', 'email', 'both'),
  status: ENUM('draft', 'sent', 'failed'),
  sent_at: TIMESTAMP,
  created_at: TIMESTAMP
)

-- Audit Logs
audit_logs (
  id: UUID PRIMARY KEY,
  user_id: UUID REFERENCES users(id),
  action: VARCHAR(100),
  entity_type: VARCHAR(50),
  entity_id: UUID,
  old_data: JSON,
  new_data: JSON,
  ip_address: INET,
  user_agent: TEXT,
  created_at: TIMESTAMP
)
```

### 5.3 API Specifications

**Authentication APIs:**
```
POST /api/auth/login
POST /api/auth/verify-otp
POST /api/auth/refresh-token
POST /api/auth/logout
```

**User Management APIs:**
```
GET /api/users/profile
PUT /api/users/profile
GET /api/users/team
POST /api/users/import (bulk upload)
GET /api/users/export
```

**Activity APIs:**
```
GET /api/activities
POST /api/activities
PUT /api/activities/:id
DELETE /api/activities/:id
POST /api/activities/:id/register
```

**Attendance APIs:**
```
POST /api/attendance/mark
POST /api/attendance/bulk-mark
POST /api/attendance/sync-offline
GET /api/attendance/pending-sync
```

**Rating APIs:**
```
POST /api/ratings
GET /api/ratings/user/:id
GET /api/ratings/activity/:id
```

**Approval APIs:**
```
GET /api/approvals
POST /api/approvals/:id/approve
POST /api/approvals/:id/reject
```

**Reporting APIs:**
```
GET /api/reports/center/:id
GET /api/reports/department/:id
GET /api/reports/zone/:id
POST /api/reports/custom
GET /api/reports/export
```

## 6. Security & Performance

### 6.1 Security Architecture

```mermaid
graph TB
    A[User Login Request] --> B[YA ID Validation]
    B --> C[OTP Generation & SMS]
    C --> D[OTP Verification]
    D --> E[JWT Token Generation]
    E --> F[Role-based Access Control]
    F --> G[Secure Dashboard Access]
    
    H[Data Layer Security] --> I[Input Validation]
    H --> J[SQL Injection Prevention]
    H --> K[XSS Protection]
    H --> L[Data Encryption at Rest]
    
    M[Audit System] --> N[Login Attempts]
    M --> O[Data Changes]
    M --> P[Access Logs]
    M --> Q[System Actions]
    
    style A fill:#ffcccc
    style G fill:#ccffcc
    style H fill:#ccccff
    style M fill:#ffffcc
```

**Security Features:**
- JWT-based authentication with OTP verification
- Role-based access control (RBAC)
- Input validation and sanitization
- SQL injection prevention
- XSS protection
- Complete audit logging
- Data encryption at rest
- HTTPS enforcement

### 6.2 Performance Requirements
- Support 500-1000 concurrent users
- Page load time < 3 seconds
- API response time < 500ms
- Offline functionality for attendance
- Bulk operations support (100+ records)
- Auto-sync with conflict resolution

### 6.3 Scalability
- Horizontal scaling capability
- Database optimization for 15,000+ users
- Redis caching for frequent queries
- CDN for static assets
- Load balancing setup

## 7. Development Timeline

```mermaid
graph LR
    A[Phase 1: Foundation] --> B[Phase 2: Core Features]
    B --> C[Phase 3: Advanced Features]
    C --> D[Phase 4: Testing & Deployment]
    
    A --> A1[Database Setup]
    A --> A2[Authentication System]
    A --> A3[Landing Page]
    A --> A4[Basic User Management]
    
    B --> B1[Dashboard Development]
    B --> B2[Profile Management]
    B --> B3[Activity Management]
    B --> B4[Approval Workflows]
    
    C --> C1[Attendance System]
    C --> C2[Rating System]
    C --> C3[Broadcasting System]
    C --> C4[Reports & Analytics]
    
    D --> D1[Testing Phase]
    D --> D2[Performance Optimization]
    D --> D3[Security Audit]
    D --> D4[Pilot Deployment]
    
    style A fill:#ffcccc
    style B fill:#ccffcc
    style C fill:#ccccff
    style D fill:#ffffcc
```

### Phase 1: Foundation
- Database setup and schema implementation
- Authentication system with OTP
- Basic user management
- Landing page development

### Phase 2: Core Features
- Dashboard development
- Profile management with approval workflow
- Activity creation and management
- Basic reporting structure

### Phase 3: Advanced Features
- Attendance marking with offline support
- Rating system implementation
- Broadcasting system
- Data import/export functionality

### Phase 4: Testing & Deployment
- Comprehensive testing
- Performance optimization
- Security audit
- Pilot deployment setup

## 8. Deployment Strategy

### 8.1 Infrastructure Architecture

```mermaid
graph TB
    A[Users] --> B[CloudFront CDN]
    B --> C[Application Load Balancer]
    C --> D[EC2 Instance 1]
    C --> E[EC2 Instance 2]
    C --> F[EC2 Instance N]
    
    D --> G[RDS PostgreSQL Primary]
    E --> G
    F --> G
    
    G --> H[RDS PostgreSQL Read Replica]
    
    I[Redis Cache Cluster] --> D
    I --> E
    I --> F
    
    J[S3 Bucket] --> K[Static Assets]
    J --> L[File Uploads]
    J --> M[Backup Storage]
    
    N[SMS Gateway] --> O[OTP Delivery]
    P[Email Service] --> Q[Notifications]
    
    style A fill:#ffcccc
    style G fill:#ccffcc
    style J fill:#ccccff
```

**Infrastructure:**
- AWS EC2 instances with load balancer
- RDS PostgreSQL with Multi-AZ deployment
- S3 for file storage
- CloudFront CDN
- Route 53 for DNS management

### 8.2 Pilot Launch
- Initial deployment for 100-500 volunteers
- Gradual rollout to full 15,000 user base
- Monitoring and feedback collection
- Performance optimization based on usage

### 8.3 Monitoring & Maintenance
- Application performance monitoring
- Database performance tracking
- Error logging and alerting
- Regular backup procedures
- Security update management

## 9. Success Metrics

### 9.1 Key Performance Indicators
- User adoption rate (target: 80% of pilot group)
- Daily active users
- System uptime (target: 99.5%)
- Average response time
- Data accuracy and sync success rate

### 9.2 Business Metrics
- Volunteer engagement improvement
- Coordination efficiency gains
- Report generation time reduction
- Communication reach and effectiveness

## 10. Risk Mitigation

### 10.1 Technical Risks
- Database performance with large datasets
- Network connectivity issues in remote areas
- Data synchronization conflicts
- Peak load handling

### 10.2 Mitigation Strategies
- Database indexing and optimization
- Offline functionality implementation
- Conflict resolution algorithms
- Load testing and capacity planning

---

*This technical specification provides a comprehensive blueprint for developing the YA Zone 5 volunteer management platform, designed to serve 15,000+ volunteers with a robust dual-hierarchy system and modern web technologies.*