When I first started building SaaS products, I fell into the classic trap. I’d spin up a standard serverless function for my API routes, hook it up to a database, and call it a day. It worked fine for my local tests. But when I launched and got users from Europe and Asia, the complaints started rolling in. The dashboard was snappy for me in the US, but felt like molasses for everyone else. I was struggling with cold starts and regional latency. I realized that treating all my backend logic the same way was a mistake. So I decided to build something different.

The problem with traditional serverless setups for global SaaS is that every request has to travel to a single origin region. If your API is hosted in us-east-1 , a user in Tokyo is adding 150-200ms of pure network latency to every single interaction. For a simple dashboard, it's annoying. For an interactive SEO analyzer or a checkout flow, it's conversion-killing.

Many developers ignore this until launch day.…