OpenAI NewsArticle
Rapidly scaling online storage to serve over 1 billion ChatGPT users (Part II)
This is infrastructure design in public, and it matters because it shows the engineering trade-offs that support one billion concurrent users. For infra builders, this is a blueprint: reliable multi-tenancy, regional caching, and managed databases at scale. For everyone else, it's a signal that ChatGPT's backend is maturing as a platform. The 12× read improvement is real but secondary to the operational patterns they're publishing.