Introducing the Zeta Client

Even with careful testing, complex systems can still surprise us. Every so often, a change that passes every check might behave differently in the real world.

That’s why we built the Zeta Client.

In the past, reverting to a prior version could take 30 minutes or more — time no one wants to spend troubleshooting. We asked ourselves, what do we wish we’d had in those moments? The answer: an immediate, reliable fallback with no downtime.

The Zeta Client lets you instantly switch to the previous day’s client version, keeping your work uninterrupted. There’s zero downtime, and no need to coordinate or reinstall anything. This is a client-side capability, made possible by our fully separated client and server architecture and backward-compatible API. That separation means flexibility and safety without added complexity. Just open Fast Lane on any page, and look for the Zeta Client in the drop-down it's that — easy.

Zeta isn’t a replacement for betas — those still have their place for early testing — but it’s a practical solution to an inevitable problem: uncertainty. If something unforeseen happens, you can revert immediately and keep moving.

The Zeta Client makes our system more resilient and your experience more reliable. It’s the kind of simple, thoughtful engineering that makes everything else we build stronger.