As a fullstack developer, you're likely no stranger to working with binary data in your Node.js applications. Buffers are used for temporary storage and exchange of data between devices or processes, represented by the `Buffer` class. They can be created from strings, arrays, or Uint8Arrays using the `Buffer.from()` method. Common operations on buffers include writing with `write()`, reading with `read()`, and concatenating with `Buffer.concat()`.