A booking system has two main parts.
Frontend
What the customer sees and interacts with:
- Calendar display
- Time slot buttons
- Forms
- Confirmation page
Built with: React, Next.js, Vue, etc.
Backend
What happens behind the scenes:
- Calendar API calls
- Authentication
- Data validation
- CRM integration
- Webhook processing
Built with: Node.js, Python, etc.
Why Separation Matters
Security: Credentials stay on backend.
Flexibility: Change frontend without changing backend.
Scalability: Scale each independently.
Bookux
Bookux builds both frontend and backend for complete booking systems.
Related: React Next.js Booking System · How Scheduling APIs Work