File Upload
File upload is a fundamental concept in web and application development that involves transferring files from a client device (e.g., a user's computer or mobile phone) to a server. It enables users to submit documents, images, videos, or other data through forms or interfaces, typically using protocols like HTTP or FTP. This process is essential for features such as profile picture updates, document sharing, and media storage in applications.
Developers should learn file upload to implement user-generated content, data import/export, and backup functionalities in applications, as it's critical for social media, cloud storage, and enterprise software. It's used when building features like uploading resumes on job sites, sharing photos on platforms, or submitting reports in business tools, requiring handling of security, validation, and storage considerations.