# Introduction

{% hint style="warning" %}
**This documentation is for Erigon v3.1.x, which is an outdated and no longer maintained version.**

For the most current documentation, please refer to [https://docs.erigon.tech](https://docs.erigon.tech/).
{% endhint %}

Erigon is an efficient Ethereum implementation designed for speed, modularity, and optimization. By default, it functions as a full node, utilizing technologies like staged sync, efficient state storage, and database compression.

With Erigon 3 the default configuration shifts from archive node to full node, enhancing efficiency, accessibility, and versatility for a wider range of users. Archive nodes remain available for developers and researchers needing full historical data, while the full node offers faster sync times and lower resource usage for everyday operations.

## Topics

* Review the hardware and software requirements to [get started](https://docs.erigon.tech/erigon/v3.1/getting_started).
* Follow the [installation guide](https://docs.erigon.tech/erigon/v3.1/installation) to set up Erigon.
* Learn the [basic usage](https://docs.erigon.tech/erigon/v3.1/basic-usage) of Erigon.
* Quickly deploy your own Ethereum, Gnosis, or Polygon [node](https://docs.erigon.tech/erigon/v3.1/quick_nodes).
* Explore Erigon's [advanced features](https://docs.erigon.tech/erigon/v3.1/advanced).
* Discover the capabilities of the [RPC Daemon](https://docs.erigon.tech/erigon/v3.1/advanced/jsonrpc-daemon).

## Additional Resources and Information

* **Releases**: see <https://github.com/erigontech/erigon/releases>.
* **Docker image releases**:
  * New Docker Image Repository: Erigon images are now available on Dockerhub repository [erigontech/erigon](https://hub.docker.com/r/erigontech/erigon).
  * Multi-Platform Support: The docker image is built for linux/amd64/v2 and linux/arm64 platforms using Alpine.
* **Frequently Asked Questions**: see <https://github.com/erigontech/erigon?tab=readme-ov-file#faq>.
* **Known Issues**: See <https://github.com/erigontech/erigon?tab=readme-ov-file#known-issues>.
* **Changes from Erigon 2**: The main changes from Erigon 2 are listed [here](https://github.com/erigontech/erigon?tab=readme-ov-file#erigon3-changes-from-erigon2).