Nanit ditched S3’s PutObject-heavy ingest path and built a custom Rust-based in-memory landing zone (N3). It cut ~$500K/year in storage ops. N3 grabs short-lived video chunks straight into RAM and only spills to S3 when it has to. Ordering stays tight thanks to SQS FIFO, and fallback kicks in clean when traffic spikes.
Bigger move: More teams are rolling their own short-lived, in-memory infra to dodge the scaling tax of cloud pricing models that bill per request.
