Architecture and technical stack of online casinos

A modern online casino is not just a gaming site, but a complex ecosystem that combines backend infrastructure, gaming providers, payment gateways, analytics and security. The performance, scalability and sustainability of the project depend on the correctly selected architecture and technical stack.

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Core Architecture Components

1. Frontend (user interface)

Website and WebApp: React, Vue. js, Tailwind CSS

Adaptability for mobile devices

• Integration with game iframe, payment forms, Live chat

2. Backend (server logic)

Languages: Node. js, PHP (Laravel), Python (FastAPI), Go

REST/GraphQL API for front interaction

• Microservice architecture with Docker and Kubernetes (as you grow)

3. Database

PostgreSQL, MySQL, Redis for cache

• Storage of user data, transactions, bets, bonuses
• Encryption and backup

4. Game providers

Integration via aggregators (SoftSwiss, Slotegrator, EveryMatrix)

• Support for slots, live games, crash, board games
• Connection via API/iframe taking into account the player's balance

5. Payment system

Wallets: cryptocurrencies (TON, USDT, BTC), cards, P2P

Connection via API: CoinsPaid, Cryptomus, Mercuryo, PayTR, etc.

Support for automatic deposits/withdrawals, transaction verification

6. Authorization system and accounts

Email/Telegram/SMS/ Web3 authorization

Sessions, tokens, multi-account protection

• Built-in support for KYC and limits

7. Admin (back office)

Manage users, bonuses, transactions

• KYC moderation, game and stock customization
• Dashboards with analytics and logs

8. Safety

DDoS protection, fraud logic, IP/geo filters

• Using TLS, password hashing, 2FA
• Suspicious activity monitoring and logging

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Technology Stack Example

Level	Technologies
Frontend	React, Vue, Tailwind, WebSocket
Backend	Node. js, PHP (Laravel), Go, Python
DB and cache	PostgreSQL, Redis, ClickHouse
Infrastructure	Docker, NGINX, CDN, AWS / Hetzner / GCP
CI/CD	GitHub Actions, GitLab CI, Ansible
Safety	Fail2Ban, WAF, Let’s Encrypt

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Scalability

Use containerization and orchestration for flexibility

• Distributed infrastructure with CDN and geo mirrors
• Horizontal scaling of game modules and APIs
• Dedicated clusters for heavy providers (for example, Live-casino)

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Architecture and tech stack is the foundation of online casinos. A properly built system allows the project to scale, be safe, work quickly and meet the requirements of both players and regulators. Technology must not only work, but also be prepared for stress, updates and global growth.