SolitX follows a modular architecture inspired by microservices principles, where functionality is organized around well-defined business capabilities.

The platform consists of approximately 70–80 REST APIs, grouped into modules (collections) such as Profile, Contract, Transaction, Ledger, Accounting, Payment, and Events.

Each module represents a distinct business capability and owns its functionality end to end.

All client requests are routed through a single API Gateway, which integrates with an identity provider for authentication and acts as the unified entry point to the platform. This ensures consistent security, routing, and cross-cutting concerns across all services.

Each module is deployed as an independent container, and together these modules operate as a single logical application.

Strong module boundaries are enforced so that services do not directly access each other’s internal logic, maintaining clear ownership and loose coupling.

The system uses a shared PostgreSQL database, with module-aligned changelogs to establish logical data ownership.

While the database is shared, strict governance and conventions preserve modular boundaries and enable controlled collaboration across services.