Sure we do that. And every month AWS does that too in their invoices :)

Evan, large files (25+ MB IIRC) are uploaded in chunks in parallel. And since in this case chunks are uploaded directly to S3, we're using S3 to check that files are uploaded correctly (and some simple checks on our backed, e.g. that the sizes match).

You can find the actual frontend code here

Thanks Kunal!

Consider adding Uploadcare to your stack on Stackshare then :p)

Well, we do that for uploading large local files. Directly to S3 buckets in chunks. It's impossible to cover all technical aspects in such short format, so we had to leave things out :)

Location of those files is not a deal breaker. In fact, we're data processors in the sense of those laws, our clients are data handlers.

You can find more on our GDPR commitment here:

https://uploadcare.com/about/gdpr/