The provided text explains Blink's Interface Definition Language (IDL) and its binding system, which serves as a crucial bridge between JavaScript and C++ within the Chromium rendering engine. It details how Web IDL is used to define web platform APIs, ensuring consistency with web standards and automating the creation of boilerplate code for type conversion and function calls between the two languages. The article further explores Blink's IDL dialect, syntax, and semantics, highlighting the role of extended attributes in controlling implementation specifics, and illustrates the end-to-end pipeline from writing an IDL file to generating and compiling the necessary C++ binding code. Ultimately, this system enhances developer productivity, reduces errors, and maintains architectural modularity by separating interface definitions from C++ implementations and managing complex interactions with the V8 JavaScript engine.