Back-end development focuses on the server-side of web applications, ensuring they function smoothly behind the scenes. It involves building and managing the infrastructure that powers a website or app, including servers, databases, and application logic.
Back-end developers work with programming languages like Python, PHP, Ruby, Java, or Node.js to write code that processes user requests, interacts with databases, and delivers the appropriate responses. Key tasks in back-end development include database design, API creation, and ensuring security and scalability.