The Internet Computer (ICP) is a groundbreaking Layer 1 blockchain platform developed by the DFINITY Foundation that reimagines how online systems and decentralized applications are built and hosted. Unlike traditional blockchains that rely heavily on external infrastructure, the Internet Computer is the first blockchain designed to function as a "World Computer"—capable of running fully decentralized, serverless applications directly on-chain without the need for cloud services or centralized hosting.

At the core of the Internet Computer is a suite of advanced cryptographic innovations, including chain key cryptography, which enables seamless scaling, near-instant finality, and efficient interoperability. Its architecture allows smart contracts—called canisters—to serve front-end user experiences, process logic, and store data, all within a decentralized environment.

One of its most revolutionary features is interoperability across blockchains. Through the Chain-Key Bitcoin and Ethereum integrations, Internet Computer smart contracts can directly sign and send transactions to Bitcoin and Ethereum, enabling seamless cross-chain interactions without bridges or wrapped assets. This unlocks a new level of composability and end-to-end decentralization across Web3.

Developers can use the Internet Computer to build a wide range of applications, including decentralized social media, DeFi protocols, enterprise software, gaming platforms, and AI-powered apps—all served from the blockchain itself. Popular dApps like OpenChat, DSCVR, and ICLighthouse demonstrate the platform’s capability to support real-time, interactive Web3 experiences without centralized components.

In addition to its technical power, the Internet Computer is also designed to be highly scalable and cost-efficient. Its unique model eliminates gas fees in the traditional sense, replacing them with cycles—a computation-based resource model that allows developers to predict and control costs.

As of 2025, the Internet Computer continues to evolve with new features such as AI canisters, enhanced cross-chain messaging, and expanded tooling for developers, reinforcing its mission to be the first blockchain capable of replacing the entire traditional internet stack.