Background

• Mid-market companies face fragmented travel management tools. TravelEase unifies booking, approvals, expenses, and analytics.
• Aligns with BusinessSolutions Inc.’s 2025 goal to expand B2B SaaS offerings.

Problem Statement

• Legacy systems lack real-time policy enforcement, expense automation, and global scalability.

Objectives

• Reduce booking time by 70%.
• Achieve 99.9% uptime for core services.
• Ensure PCI DSS compliance for payments.

Functional Requirements

1. Unified Booking System:
   • Integrate with Sabre/Amadeus GDS for real-time flight/hotel inventory.
   • Policy-based booking restrictions (e.g., max budget per trip).
2. Automated Expense Reconciliation:
   • Match corporate card transactions to trips via OCR receipt processing.

Non-Functional Requirements

• Performance: <3s response time for search queries.
• Scalability: Support 10K concurrent users.
• Security: SOC 2 Type II compliant.

User Stories

• As a traveler, I want one-click expense reporting so I avoid manual receipt entry.
• As an admin, I need real-time spend dashboards to monitor policy compliance.

High-Level Diagram

          mermaid
          graph TD
          A[Client: Web/Mobile] --> B[API Gateway]
          B --> C[Booking Service]
          B --> D[Expense Service]
          C --> E[Sabre GDS]
          D --> F[Stripe Payments]
          

Technology Stack

• Backend: Node.js (Microservices), PostgreSQL (Transactions), MongoDB (Itineraries).
• Frontend: React (Web), React Native (Mobile).
• DevOps: AWS EKS, Terraform, GitHub Actions.

Data Flow

1. User submits trip request → Booking Service validates policy → GDS fetches inventory → Booking confirmed.
2. Expense Service syncs card transactions → OCR processes receipts → Accounting system (NetSuite) export.

Third-Party Integrations

• GDS: Sabre, Amadeus.
• Payments: Stripe, Adyen.
• Auth: Okta.

Component Design

• Booking Service:
  • Inputs: Trip details (dates, budget).
  • Logic: Policy engine checks against company rules.
  • Output: Confirmed booking or approval request.

Database Schema

          sql
          TABLE Trips (
            trip_id UUID PRIMARY KEY,
            user_id FOREIGN KEY,
            budget DECIMAL,
            status ENUM('pending', 'approved', 'booked')
          );
          

API Specifications

Endpoint: POST /api/bookings

Request:

          json
          {
            "trip_id": "uuid",
            "destination": "NYC",
            "budget": 1500
          }
          

Response:

          json
          {
            "status": "approved",
            "booking_ref": "SABRE-123"
          }
          

Error Handling

• GDS Timeout: Retry 3x → Fallback to cached inventory.
• Payment Failure: Notify user + log to Sentry.