The core activity of Gelato is providing a Web3 platform that enables developers to create, deploy, and scale scalable, customizable, and enterprise-grade rollups. Gelato offers a range of services, including Rollup-as-a-Service, verifier nodes, relay functions, Verifiable Randomness (VRF), and automation features to support the development and operation of Web3 applications. The company focuses on providing infrastructure and tools for Web3 development, particularly in the area of rollups, which represent a key technology for scaling blockchain applications.