It is a built-in object in Node.js that represents binary data.
- It is useful when working with binary streams or when interfacing with non-JavaScript systems or protocols.
 - Buffer objects are used to represent a fixed-length sequence of bytes. Many Node.js APIs support Buffers.
 - The Buffer class is a subclass of JavaScript's Uint8Array class, extending it with methods that cover additional use cases.
 - While the Buffer class is available within the global scope, it is still recommended to reference it via an import or require statement explicitly.
 - They are used to create multiple chunks of data for processing instead of all of it immediately.
 - It is used in storing streaming data before processing.