WAYF is a Fastify Development Agency:
Node.js at Full Speed.

The Express autopilot. Teams pick Express because it's familiar, then spend months adding validation, serialization, logging, and error handling that Fastify provides out of the box. The "simple" choice becomes a custom framework maintained by people who didn't mean to write one.

Ignoring the plugin system. Fastify's power is its plugin architecture — encapsulated, reusable, properly scoped. Teams that treat it like Express with better benchmarks miss the point. They end up with the same tangled middleware chains they were trying to escape.

Validation as an afterthought. Fastify's schema-based validation is one of its best features — fast JSON serialization, automatic request validation, generated documentation. Teams that skip it lose performance benefits and end up writing manual validation code anyway.

Premature optimization everywhere else. Teams choose Fastify for speed, then connect it to an unindexed database, make synchronous calls to slow external services, and wonder why the app isn't fast. The framework isn't the bottleneck. It rarely is.

We fix these. But we'd rather help you avoid them.