I was part of designing a user file upload, it was a B2B product,limited number of users and in principle trusted users but similar to other comments we did som

I was part of designing a user file upload, it was a B2B product,limited number of users and in principle trusted users but similar to other comments we did something like: - some file type and size checks in web app - pre-signed URL - upload bucket - lambdas for processing and sanity checks - processed bucket