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

# Architecture

Understand Guardian's services, data flows, integrations, and signing paths.

This section explains how Guardian's services, data, and external integrations work together.

* [High Level Architecture](/guardian/architecture/architecture-2.md) introduces the platform's microservices and their relationships.
* [Deep Dive Architecture](/guardian/architecture/reference-architecture.md) shows the component-level design and modular implementation.
* [Policies, Projects and Topics Mapping Architecture](/guardian/architecture/schema-architecture.md) explains Hedera topic structures and policy data migration.
* [External Events](/guardian/architecture/external-events.md) covers event-driven integrations through NATS and webhooks.
* [MRV Splitting Logic](/guardian/architecture/mrv-splitting-logic.md) visualizes how MRV data is split.
* The [Vault](/guardian/architecture/internal-with-vault-signing-sequence-diagram.md) and [Fireblocks](/guardian/architecture/fireblocks-signing-sequence-diagram.md) sequence diagrams show the available signing paths.