[alex_smart]

From the article, individual video segments were 2-6 MB in size and SQS and Kinesis have a 1MB limit for individual records so they couldn’t have used either service directly. At least not without breaking their segments into even smaller chunks.

[Gasp0de]

You're right, I didn't pay attention there. Still seems that there a many solutions better suited than S3. Probably a classic case of "We need an MVP fast, let's optimize later".

[0x6c6f6c]

Agreed, but this isn't always bad. Optimizing early with unclear requirements can kill time, which at an early stage is just delaying product launch.

Migrate/optimize later when you're actually reaching scale is a perfectly reasonable approach.

In fact, if you have a decent abstraction or standard in place (e.g. S3 API or repository pattern) you can swap it out in place.