StarkNet functions as an open, decentralized Validity-Rollup, also known as a “ZK-Rollup.” It acts as a Layer 2 (L2) network atop Ethereum, providing dApps with the ability to scale their computational needs infinitely. This is achieved without sacrificing the composability and security of Ethereum, owing to StarkNet's use of the highly secure and scalable cryptographic proof system, STARK.

The StarkNet ecosystem comprises contracts and the StarkNet Operating System, both developed in Cairo. This setup facilitates the deployment and expansion of various applications, regardless of their specific business requirements.