> For the complete documentation index, see [llms.txt](https://doc.rocky.exchange/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.rocky.exchange/overview/architecture.md).

# Product Architecture

Rocky's architecture combines a high-performance execution layer with Canton-native settlement.

## Execution layer

* **Matching engine** - processes eligible buy and sell orders.
* **Order book** - organizes market liquidity and supports market-maker participation.
* **Market-maker API** - provides programmatic access for qualified liquidity providers.
* **Risk engine** - monitors margin, exposure, and liquidation conditions.

## Canton settlement layer

* **Daml contracts** - represent financial rights, obligations, and state changes.
* **Margin and position workflows** - coordinate collateral and position updates.
* **Asset workflows** - handle supported asset movements and transaction approvals.
* **Atomic settlement** - coordinates linked actions so they complete together or do not complete.
* **Selective visibility** - shares transaction data only with the parties required for the workflow.

This separation allows execution to remain responsive while settlement retains Canton's privacy and workflow capabilities.