Lectura rápida
Empieza por la explicación más corta y útil antes de profundizar.
Non-production blockchain networks used for development and testing. Tokens on these networks have no monetary value and can be obtained via faucets (airdrops). Solana operates devnet (development, frequently reset) and testnet (stress testing, closer to mainnet specs). Ethereum has Sepolia and Holesky testnets. Always test on devnet before deploying to mainnet.