> For the complete documentation index, see [llms.txt](https://docs.hemi.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hemi.xyz/foundational-topics/the-architecture/ethereum-rollups.md).

# Ethereum Rollups

{% hint style="info" %}

## 📜 **TL;DR:**

* 🚗 Rollups optimize Ethereum's performance by gathering transactions "off the main Ethereum highway" (Layer 1) and then officially process them on a "side road" **(Layer 2).**
  {% endhint %}

***

## 🌐 Overview

* Ethereum Rollups are a Layer-2 scaling solution designed to enhance the ***throughput and features*** of the Ethereum network.
* They operate by "rolling up," or bundling, multiple transactions off-chain and submitting them in batches to the Ethereum mainnet for data availability. By doing so, they significantly reduce congestion and gas fees while maintaining interoperability with Ethereum.
* Rollups can also add new protocol features that would be impossible directly on Ethereum (e.g., PoP security to inherit Bitcoin Finality and Hemi's hVM Bitcoin Interoperability system).


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