You already assume that the scale of the retention will be in years. What makes you think that ? It may be days, where "as long as possible is "we hope to keep

You already assume that the scale of the retention will be in years. What makes you think that ? It may be days, where "as long as possible is "we hope to keep the files a few weeks". Without some sort of project plan you don't know if NoFile.io is aiming at snapchat for file, or S3 for everyday Joe.