The Arbitrum Foundation is an organization dedicated to developing and nurturing the Arbitrum ecosystem, which includes Arbitrum One and Arbitrum Nova. Arbitrum One is an Optimistic Rollup designed to scale applications efficiently, reducing costs while maintaining Ethereum's robust security. In contrast, Arbitrum Nova offers ultra-low transaction fees by utilizing AnyTrust technology, making it well-suited for social and gaming applications. As the leading Ethereum scaling solution, Arbitrum has garnered a significant market share, facilitating hundreds of applications and holding over 50% of all rollup liquidity in the space. The Foundation emphasizes core values of diversity, equity, inclusion, and belonging, striving to create a supportive workplace where all employees can thrive, regardless of their backgrounds.