Introduction to dApp Development

Decentralized applications (dApps) pair smart contracts on a blockchain with familiar web frontends. Users connect wallets instead of usernames and passwords; logic and state live on chain or on decentralized infrastructure — not solely on a company's servers.

Users pay gas for state changes, and every transaction is public. That transparency enables composability — other developers can plug into your contracts without permission — but it also means mistakes and exploits are costly and irreversible.

This course covers architecture, smart contracts, frontend integration, wallets, RPC providers, testnets, testing, indexing, decentralized storage, UX patterns, and launching to mainnet — the full builder path from idea to production.