> For the complete documentation index, see [llms.txt](https://docs.most.wtf/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.most.wtf/developers/developer/key-components.md).

# Key Components

The Most Bridge is made up of 5 main components:

<table data-view="cards"><thead><tr><th></th><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td></td><td>Escrow Smart Contract</td><td></td><td><a href="/developers/developer/escrow.md">Escrow</a></td></tr><tr><td></td><td>Payment Registry Smart Contract</td><td></td><td><a href="/developers/developer/payment-registry.md">Payment Registry</a></td></tr><tr><td></td><td>Operator Service</td><td></td><td><a href="/developers/developer/operator-service.md">Operator Service</a></td></tr><tr><td></td><td>HDP Module</td><td></td><td><a href="/developers/developer/hdp-module.md">HDP Module</a></td></tr><tr><td></td><td>Hook Executor</td><td></td><td><a href="/developers/developer/hook-executor.md">Hook Executor</a></td></tr></tbody></table>