architecture

A shoe company taught me most of what I needed to know about neocloud. This spring, Allbirds — the sustainable-sneaker brand, the one that makes shoes out of wool — announced it was selling off its footwear business to reinvent itself as "NewBird AI," a GPU-as-a-Service cloud provider. The stock jumped roughly 580% in a single day. The money behind the pivot was about $50 million, which, at thirty to forty thousand dollars per NVIDIA H100, buys you on the order of fifteen hundred GPUs — a rounding error against what a real AI cloud runs on. The market didn't care. You could bolt "AI cloud" onto a wool-shoe company and six-x the valuation by lunch. ...

The vocabulary of "multi-X" gets thrown around loosely in cloud architecture conversations, and four different things end up conflated into one. Multi-AZ, multi-account, multi-region, multi-cloud — they sound related but they aren't really. They have different costs, different benefits, and different prerequisites. They deserve to be evaluated separately. Multi-AZ: the resilience pattern you mostly get for free It's worth naming what the cloud gives you almost by default — and what corporate on-prem data centers historically didn't. A modern cloud region is a cluster of independent availability zones, typically three or more, each its own physical data center with its own power, network, and cooling. The major managed services — databases, load balancers, queues, object stores, even Kubernetes control planes — are designed to run across AZs. Active-active-active across three AZs is the cloud-native default, not an architectural achievement. ...