Hello readers 👋, welcome to the 13th blog in our Node.js series! In the last post, we learned how Multer helps us accept file uploads in Express, whether single files or multiple files. We configured a disk storage engine and saw how req.file and req.files give us all the details about what arrived. But one question remained unanswered: where do the uploaded files actually live, and how do clients get them back? Today we're going to close that loop. We'll talk about storage choices, how to serve uploaded files so they're accessible via a URL, and crucial security practices that keep your application safe. By the end, you'll have a complete picture of the upload‑serve lifecycle. Let's jump in. Where uploaded files are stored When Multer saves a file on the server, it places it into a folder that you specify via the destination callback. In our previous example, we used an uploads folder at the root of our project.…