# Arbitrum  intro

By [dood777](https://paragraph.com/@dood777) · 2022-08-21

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Arbitrum is an L2 scaling solution for Ethereum, offering a unique combination of benefits:

*   Trustless security: security rooted in Ethereum, with any one party able to ensure correct Layer 2 results
    
*   Compatibility with Ethereum: able to run unmodified EVM contracts and unmodified Ethereum transactions
    
*   Scalability: moving contracts’ computation and storage off of the main Ethereum chain, allowing much higher throughput
    
*   Minimum cost: designed and engineered to minimize the L1 gas footprint of the system, minimizing per-transaction cost.
    

Some other Layer 2 systems provide some of these features, but to our knowledge no other system offers the same combination of features at the same cost.

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*Originally published on [dood777](https://paragraph.com/@dood777/arbitrum-intro)*