Alchemy/Infura

Alchemy

https://www.alchemy.com/

https://twitter.com/AlchemyPlatform?ref_src=twsrc^google|twcamp^serp|twgr^author

https://www.youtube.com/watch?v=ftGruNA50QU

https://github.com/alchemyplatform/alchemy-web3

Infura

https://infura.io/

https://twitter.com/infura_io?ref_src=twsrc^google|twcamp^serp|twgr^author

https://academy.moralis.io/blog/infura-explained-what-is-infura

https://www.youtube.com/watch?v=OPtt2SiQ4qk

https://blog.infura.io/post/tutorial-creating-a-compound-smart-contract-api-with-infura