When BookNest's mart outgrows one machine, the usual next step is a managed cloud warehouse. None of the five below can run on this host without an account and a card, so this section is not run here: architectures come from vendor documentation and prices from vendor price lists, checked on 2 October 2026 (US East regions, list prices, before discounts). Prices change often; treat them as the shape of each bill, not a quote.