So, in this article, I will be showing you how you can upload files to AWS S3 from a Flutter app, on both web and mobile. The naive way to do this — the one that appears in half the tutorials — is to paste your AWS access key and secret into the app and call putObject directly. Do not do that.
Source: [Dev.to](https://dev.to/mryadavgulshan/upload-files-to-aws-s3-from-flutter-web-mobile-lp3)