Deploying a smart contract on Testnet

During the process of developing Web3 products, before we deploy the smart contracts in Mainnet, which carries out genuine transactions with real financial value, we need an environment to simulate the Mainnet with a full set of tools and real-world transaction volumes. However, these tools and real-world traffic cannot be provided by a local EVM. Luckily, the most popular blockchains, including Ethereum, have their Testnet available for developers, so they can try out their smart contract in a simulation environment.

Because the cryptocurrencies in Testnet don’t have real-world value, it is free for developers to test out their smart contracts without worrying about financial loss. Developers can switch to Mainnet from Testnet just by changing to another RPC endpoint. Once you have learned how to use Hardhat to deploy smart contracts on Testnet, you can do the same thing to deploy the smart contracts on Mainnet.

Ethereum has multiple...