> ## Documentation Index
> Fetch the complete documentation index at: https://docs.caldera.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# Arbitrum Nitro

<Tip>
  {" "}

  For a closer look, check out [Arbitrum's Documentation](https://docs.arbitrum.io/inside-arbitrum-nitro){" "}
</Tip>

With Caldera, you can deploy dedicated rollups using the **Arbitrum Nitro** stack.

Arbitrum Nitro is a battle-tested Optimistic Rollup stack. Arbitrum Nitro powers *Arbitrum One*, the flagship Arbitrum chain, and *Arbitrum Nova*, a lower-cost chain targeted towards gaming. Arbitrum Nitro secures over \$6 Billion in TVL across chains in production.

### Benefits

* 10-100x cheaper transactions compared to Ethereum.
* Ethereum equivalence, with full support for Ethereum smart contracts and developer tooling
* Faster block times, as fast as 250ms when under high throughput
* Working fault proofs
* Optional Support for WASM smart contracts via Stylus
* Support for further cost reduction via Arbitrum Anytrust or Celestia DA
* Ability to choose your rollup's native token

# Anytrust

<Tip>
  {" "}

  For more info, view the Anytrust docs [here](https://docs.arbitrum.io/inside-arbitrum-nitro/#inside-anytrust){" "}
</Tip>

Arbitrum AnyTrust, a variant of Arbitrum Nitro technology, adopts a mild trust assumption to lower transaction costs. Unlike standard Arbitrum where all nodes require access to every Layer 2 transaction data, AnyTrust relies on a Data Availability Committee (DAC) to store and provide data on demand, assuming at least two members are trustworthy for data availability. It employs Data Availability Certificates (DACerts) to guarantee data availability until a specified expiration time.

With Anytrust, you can achieve a further **10-100x** cost decrease compared to a standard rollup.

This setup allows for more cost-effective transaction processing while ensuring data availability, aiding in creating personal AnyTrust and Rollup chains with an infrastructure capable of significantly higher capacity than Ethereum, yet still leveraging Ethereum's security framework.

# Stylus

<Tip>
  {" "}

  For more info, view the Stylus docs [here](https://docs.arbitrum.io/stylus/stylus-gentle-introduction){" "}
</Tip>

Arbitrum Stylus is an advancement to the Arbitrum Nitro technology, introducing a secondary, co-equal WASM virtual machine alongside the existing Ethereum Virtual Machine (EVM) on the Arbitrum chains like Arbitrum One, Arbitrum Nova, and Arbitrum Orbit. This new virtual machine enhances the programming environment, enabling developers to write and deploy smart contracts using languages like Rust, C, or C++.

WASM execution is significantly more performant (Over **10x less gas used**) and allows developers to use battle-tested Rust, C++, and C libraries in their smart contracts.

<Card title="Want inspiration?" icon="github" href="https://github.com/OffchainLabs/awesome-stylus">
  Check out the OffchainLabs/*Awesome-Stylus* repo on Github for examples of
  smart contracts with Stylus
</Card>