Remote Procedure Call (RPC)

A Remote Procedure Call (RPC) is a communication protocol that allows a program to request a service or execute a function on a remote server as if it were a local operation. In blockchain, RPC is how wallets, dApps, and developers interact with blockchain nodes. When you send a transaction through MetaMask or query an account balance, your request travels via an RPC endpoint to a node that processes it. Public RPC providers like Infura and Alchemy serve as crucial infrastructure for the Ethereum ecosystem.