[//]:content-type-MARKDOWN-DONOT-DELETE Decentralized application (DApp) is an application that runs on a blockchain or other distributed networks, without relying on a single server or institutional control. Its core lies in the automatic execution of smart contracts and the collective maintenance of multiple nodes, achieving higher security, transparency, and resistance to censorship. DApps are widely used in the fields of DeFi, NFT, games, social media, etc., with the three major features of open source, autonomy, and trustlessness; but they also face performance bottlenecks, user experience, and compliance risks. With the official tutorials and tools provided by Gate, you can complete DApp browsing, interaction, and development environment configuration in minutes, quickly stepping into the era of Web3. ## 1. What is a DApp? drop **decentralized application**(Decentralized Application, abbreviated** DApp** DApp refers to software running on a blockchain or distributed ledger network. In contrast to traditional centralized applications (Apps), the core logic is executed by on-chain smart contracts, with multiple nodes collectively maintaining the state. Users can interact without relying on centralized intermediaries, greatly reducing trust risks. DApps are usually open source, allowing anyone to view their code and contracts, and achieve autonomous governance and community participation through token incentive mechanisms. ## 2, The core features of DApp ### 2.1 Open Source DApp smart contracts and front-end code are often hosted on public code repositories, allowing community audits and contributions, enhancing transparency and security. ### 2.2 Decentralization The application status and business logic are synchronized and stored for execution on multiple nodes to avoid single point of failure and censorship risks. ### 2.3 Smart contracts self-execution Smart contracts are pieces of code deployed on the blockchain that execute automatically when conditions are met, ensuring that transactions are tamper-proof and traceable. ### 2.4 Token Economic Incentives DApps often have built-in tokens for paying service fees, staking governance, or rewarding contributors, forming a sustainable economic model. ## 3, Architecture Components of DApp The typical architecture of DApp can be divided into the following four layers: **Blockchain Network Layer** Responsible for data storage and consensus, such as Ethereum, BSC, Solana and other public chains; **Contract Layer** On-chain deployment of business logic and state machines to achieve core functions and automatic execution; **Middleware/API Layer** Provides off-chain services such as indexing, message push, identification, and data analysis to accelerate front-end access; **Front-end user interface** DApp interface on Web or mobile, interacts with smart contracts through libraries like Web3.js and Ethers.js. ## 4. Common DApp Types and Cases | Type | Example | Application Scenarios | | :-- | :-- | :-- | | DeFi | Uniswap, Aave, Compound | Decentralized trading, lending, and yield farming | | NFT Platform | OpenSea, Rarible | Minting and trading of digital artworks | | Blockchain Game | Axie Infinity, Gods Unchained | Play-to-Earn, virtual asset ownership | | Social Media | Lens Protocol, Steemit | Decentralized content creation and distribution | | decentralized identifier | ENS (Ethereum Name Service) | Blockchain domain names and self-sovereign identities | ## 5, The main advantages of DApp - **Safety and Transparency** All transactions and contract invocations are recorded on-chain, auditable and tamper-proof. - **Trustless** Smart contracts automatically execute, users do not have to trust centralized institutions, reducing counterparty risk. - **censorship resistance** On-chain data is distributed and stored, and a single entity cannot shut down or tamper with the application. - **Global Accessible** Any user with internet access and a compatible wallet can use it, with no geographical restrictions. ## 6. Participate in DApp development and usage On the Gate Web or App, find the "Web3" or "DApp browser" entrance and connect your **Web3 Wallet** Access the supported DApp list directly, jump and sign transactions with one click to experience various scenarios such as DeFi, NFT, and games. alt

## 7, Conclusion **decentralized application (DApp)** By reshaping the trust and business models of the Internet through blockchain and smart contract technology, users can enjoy higher security, transparency, and autonomy. Despite facing challenges in performance and compliance, tremendous potential has been demonstrated in DeFi, NFTs, gaming, and social sectors. With the official tutorials from Gate Help Center, you can quickly connect to the DApp ecosystem, securely manage assets, participate in governance, and together step into the new era of Web3.

An article explaining what decentralized applications (DApps) are?

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