> For the complete documentation index, see [llms.txt](https://docs-whitepaper.gitbook.io/nexfi-wallet/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs-whitepaper.gitbook.io/nexfi-wallet/5.-technical-architecture.md).

# 5. Technical Architecture

#### 5.1 Frontend & Mobile Apps

Cross-platform React Native mobile apps and a React web dashboard, built with encrypted local storage and secure session management.

#### 5.2 Backend & Microservices

Containerized microservices (Kubernetes), stateless APIs for onboarding, payments, token logic, and analytics, with horizontal auto-scaling.

#### 5.3 Blockchain Integration & Custody

NEXFI token on BNB Chain for low-cost transfers, with Fireblocks MPC custody. Fiat rails via Railsr and Airwallex integrations.

#### 5.4 Security & Compliance

End-to-end AES-256 encryption, TLS everywhere, SOC-2 compliant infrastructure, real-time monitoring, and robust KYC/AML workflows via Sumsub.