Solana's Interface Definition Language (IDL) specifies a programs instructions, account structures and more. They are JSON files that provide a standardized method for developers to define interfaces, which in turn facilitates compatibility between different applications and services on the Solana network.
The Anchor framework is one of the popular Solana tools used to build applications. You can use Anchor to build a program - which generates the IDL needed to communicate with other Solana Programs.
Updated 6 months ago