# Scroll: what it is and why use it?

**`What is Scroll?`**

**Scroll** is a Layer 2 (L2) scaling solution for Ethereum that aims to enhance the blockchain’s throughput and efficiency while maintaining security and decentralization. It is built using zk-rollups (zero-knowledge rollups), a cryptographic technology that bundles multiple transactions together and processes them off-chain, while only submitting a single proof of validity to Ethereum. This reduces transaction costs and increases scalability without sacrificing security.

**`What are the main advantages of using Scroll?`**

* **Low Transaction Costs**: **Scroll** significantly reduces gas fees for users by processing transactions off-chain. This makes it more affordable to interact with decentralized applications (dApps), especially in periods of high network congestion.
* **Scalability**: By leveraging zk-rollups, **Scroll** can handle many more transactions per second compared to Ethereum’s base layer. This is particularly useful for dApps that require high throughput like DeFi protocols, gaming and NFTs.
* **Ethereum-Level Security**: Despite operating off-chain, **Scroll** inherits the security guarantees of Ethereum. zk-rollups ensure that any off-chain activity is valid, making it a safe option for users who value security.
* **Decentralization-Friendly**: **Scroll** prioritizes decentralization, aligning closely with Ethereum’s philosophy. Unlike some scaling solutions that rely heavily on centralized components, Scroll uses zk-proofs to maintain decentralization without compromising on performance.
* **Developer-Friendly**: **Scroll** is compatible with existing Ethereum tooling, meaning developers can easily port their dApps from Ethereum to **Scroll** without making major changes. This ease of integration makes **Scroll** an attractive platform for developers.
* **Eco-Friendly**: By reducing the load on Ethereum’s *mainnet,* **Scroll** helps lower the overall energy consumption of the network, making it a more environmentally friendly option compared to traditional Layer 1 solutions.

**`Why is Quill on Scroll?`**

**Quill** allows users to borrow a s*tablecoin* (**$USDQ)** against collaterals (such as wETH, weETH, wstETH and SCR) at a set interest, relying on multiple on-chain interactions (collateral deposits, redemptions, liquidations). Scroll's zk-rollups bundle many transactions into one, dramatically reducing gas fees compared to Ethereum Layer 1. This makes user interactions, especially for borrowing and liquidation operations, much more affordable.

* **Lower Transaction Costs**: zk-rollups reduce gas fees, making interactions with protocols like **Quill** more affordable, especially for actions like collateral deposits and redemptions.
* **Improved Scalability**: **Quill** benefits from high throughput due to Scroll’s zk-rollup scalability. Scroll handles more transactions per second, allowing these protocols to serve a growing number of users without network slowdowns. This is crucial for DeFi applications, where delays can lead to liquidation risks or missed arbitrage opportunities.
* **Ethereum-Level Security**: Scroll inherits the security of Ethereum through zk-proofs. **Quill** relies on robust security to prevent system exploits. By being on Scroll, **Quill** can operate with the same level of confidence as  on Ethereum while gaining scalability benefits.
* **Decentralization and Trustlessness**: **Quill** is designed to be fully decentralized, Scroll aligns well with this philosophy by being an Ethereum Layer 2 that prioritizes decentralization and minimizes the reliance on centralized operators. This allows **Quill** to maintain trustless operations, which is important for protocols aiming to remove human control from the system.
* **Enhanced User Experience**: With low costs and faster transactions, **Quill'**s users can enjoy a smoother experience. Liquidations, collateral adjustments and other critical DeFi interactions become seamless on Scroll, reducing friction for both borrowers and liquidators.

#### **`How do I bridge to Scroll?`**

Head to <https://scroll.io/bridge> and follow their very intuitive UI for an easy way to **bridge** assets from Ethereum to Scroll.

If you need any more information on how to bridge to Scroll, please follow this [official FAQ](https://scroll.io/bridge/faq).&#x20;