The Multi File Upload component for OutSystems Developer Cloud (ODC) is a reusable and enterprise-ready solution that allows users to select and upload multiple files simultaneously, supporting both small and large files efficiently. It provides client-side validation for file types, size limits, and duplicate prevention, while capturing essential metadata such as file name, type, size, and binary content. The component integrates seamlessly with server actions, allowing files to be stored in database binary fields or external storage systems like cloud blob storage, with optional sequential upload to handle large files without freezing the browser. Designed following ODC best practices, it ensures security through server-side validation, file type restrictions using pure JS