Data engineering·Moving data out of the source
the file arrives in a bucket exactly as the vendor sent it, wrong headers and all, and nothing touches it there.
Landing zone
Also calledraw zone, landing area, drop zone
The place raw arrivals are written before anything is done to them, kept byte-for-byte as received. It exists so that every downstream mistake is recoverable without asking the source again — you can reprocess history because you still have history. The discipline is that nothing edits it in place, which is what makes it worth the storage bill.