The last part can be any size, so with a few tweaks to the streaming code you should be fine. Ready-made AWS SDKs handle this (chunking) for you. Truth be told,

The last part can be any size, so with a few tweaks to the streaming code you should be fine. Ready-made AWS SDKs handle this (chunking) for you. Truth be told, the multupart upload on GCP is even worse :/