# About LayerZero

By [Untitled](https://paragraph.com/@0x2aee3234eaed102777688544daa54441fb3b47f5) · 2023-05-21

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About LayerZero

LayerZero is a User Application (UA) configurable on-chain endpoint that runs a ULN.

It relies on two parties to transfer messages between on-chain endpoints: the Oracle and the Relayer.

When a UA sends a message from chain A to chain B, the message is routed through the endpoint on chain A.

The endpoint then notifies the UA specified on chain B that a message has been received.

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*Originally published on [Untitled](https://paragraph.com/@0x2aee3234eaed102777688544daa54441fb3b47f5/about-layerzero)*