Back-end development means working on server-side software, which focuses on everything you can't see on a website. Back-end developers ensure the website performs correctly, focusing on databases, back-end logic, application programming interface (APIs), architecture, and servers.Backend developers build code that allows a database and an application to communicate with one another. Backend developers take care and maintain the back-end of a website, Including databases, servers, and apps, and they control what you don't see.Back-end development involves crafting code that operates within the server-side of a web application. This encompasses user authentication and authorization, handling HTTP requests and responses, data validation and manipulation, and managing files and data storage.