Starknet is a Layer 2 scaling solution for Ethereum, designed to enhance transaction speed and reduce costs without compromising security. It operates as a Validity-Rollup (also known as a ZK-Rollup), processing transactions offchain and then submitting a succinct cryptographic proof, called a STARK proof, to the Ethereum mainnet. This method allows Starknet to bundle numerous transactions into a single proof, increasing throughput and efficiency. By leveraging advanced cryptographic techniques, Starknet maintains the security and decentralization of Ethereum while providing a scalable environment for onchain applications.