Focus mode
To deploy to either a testnet or mainnet, you will need to use a Node provider. The web3 provider allows your application to communicate with an Ethereum or Blockchain Node. Providers receive JSON-RPC requests and return the response.
A web3 library cannot interact directly with smart contracts. When you want to deploy your application on a chain, you need to get the data from the blockchain and node providers make this process easy. Using an external service is valuable because setting up your own node can take a long time (weeks), need to be regularly upgraded, struggle to scale, and is costly.
There are many popular node providers available for developers including Alchemy, Infura , QuickNode, Ankr, Chainlink and Moralis. Node provider services have paid and free options.
Resources:
https://www.linkedin.com/pulse/what-web3-node-provider-top-5-blockchain-development-hukam-singh/
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