We can deploy the ERC20 token smart contract shown in Chapter 5, Developing Your Own Cryptocurrency, from Remix to the Infura Ropsten testnet easily. Just use an injected Web3 instance by using MetaMask, which is already connected to Ropsten testnet through Infura. If you need ethers for test, you can get them from https://faucet.metamask.io:
Follow the regular deployment process; the smart contract will be deployed to the Ropsten testnet in a few clicks, as shown here:
After connecting to the Infura blockchain network, ...