# Welcome to Swing

## **Introduction**

[Swing](https://swing.xyz/) is **cross-chain infrastructure for the internet**.  It is an interoperability protocol that unifies multi-chain liquidity to enable arbitrary cross-chain interactions. It serves as an open standard and common building block for developers and traders needing cross-chain exchange functionality. Swing aggregates liquidity from major blockchains, cross-chain bridges, and decentralized liquidity sources. 

### How can I use Swing?

![](/files/m0K1Dh8r5qONSti1wQfl)

#### [Swing API/SDK](/swing/build-with-swing/start-here.md) for developers 

**➡**  Build dApps with cross-chain liquidity and interoperability at its core

**➡**  Integrate at the smart contract or application layer 

**➡**  Keep users on your interface for on-chain and cross-chain swaps

#### [Swing App](https://app.swing.xyz/) for crypto traders and investors 

**➡**  Easily trade and move crypto across layer 1 and 2 blockchains 

**➡**  Find the best route (cheapest, fastest or highest amount) for cross-chain swaps

## **Swing developers build cross-chain dApps with a few lines of code**

Swing simplifies how developers integrate and route cross-chain liquidity into everyday dApps.

<details>

<summary>🔥  <a href="/pages/eZTKzT4eD239Hdw9EwuM">Get Started</a></summary>

Learn about Swing's key concepts and get started today

</details>

<details>

<summary><strong>⛓</strong>   <a href="/pages/XoJceWPIc4MvsLVluq1N"><strong>Swing API</strong></a></summary>

Explore server-side API libraries and integrate with API endpoints

</details>

<details>

<summary><strong>🖥</strong>   <a href="/pages/E02CVyKsJCWkcBEHbWNC"><strong>Swing SDK</strong></a> </summary>

Explore the SDK to build and customize apps with Swing&#x20;

</details>

### What can I build on Swing?

💵  Cross-chain wallets

🤖  Cross-chain arbitrage bots

🏪  Cross-chain NFT marketplaces

📊  Cross-chain yield aggregators&#x20;

📈  Cross-chain DEXes

🏦  Cross-chain money markets&#x20;

![](/files/tDSbjLHhzTkcoVoWTB7B)


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