Your failover plan is a DNS record you've never tested.
Most teams' cross-region failover is a weighted record, a health check someone configured once, and hope. ZeusK8s gives every service one name across every cluster — health-checked from inside and outside, and rerouted in under a second when something actually breaks.
Route 53 and Cloud DNS are great — inside their own cloud.
The managed DNS and health-check products from AWS and Google are genuinely good. They're also how you stay locked in: the records, the health checks, and the failover logic all live in one provider's console, wired to that provider's infrastructure. The day you need traffic to move between GCP and AWS — or to your own hardware — is the day they stop helping.
Running your own global routing layer instead has traditionally meant specialist work, or an expensive third-party traffic manager sitting in front of everything.
Zeus does this for you. One routing layer across every cloud and every cluster you own, with automatic health monitoring and failover routing built in — using Route 53 or Cloud DNS underneath as plain registries, never as the brain.
One name for a service, no matter which cluster answers.
One name, every cluster
Give a service or database a single stable name across all of your clusters. Route by latency, by weight, or union the healthy targets across clusters — without hand-writing provider DNS rules.
Failover in under a second
Routing decisions are pushed to every cluster the moment health changes — you're not waiting on TTLs to expire or config reloads to propagate. Traffic moves before your users notice.
Health checks, inside and out
Local TCP, UDP, HTTP/S, and Kubernetes probes watch every target from inside the cluster. Independent probers in multiple regions verify your public endpoints from the outside and agree by quorum — so "up" means actually reachable, not just running.
Fails safe, not silent
When state is ambiguous, Zeus answers fail-closed instead of pointing traffic at a dead target. Each cluster keeps its last-known-good routing on disk, so resolution keeps working even if the control plane is unreachable.
Works with the fabric
The same routing layer covers private cross-cluster traffic on the encrypted fabric and public traffic on your domains. One mental model for both.
Domains & TLS included
Bring your domains, get automatic certificates and per-brand white-label DNS on top — same control plane, no extra tooling.
Related: cross-cluster networking · domains, certificates & white-label
DNS failover either works by accident, or it's the mess nobody wants to touch.
- · Hand-written weighted records in a provider console someone set up once
- · Health checks that test the load balancer, not the application behind it
- · Failover that has never been exercised outside of an actual outage
- · Every change made carefully, because nobody is sure what depends on what
- · Endpoints, targets, and health policies defined in one place, visible to the whole team
- · A preview of exactly what each region resolves to, before you apply
- · Health verdicts from inside the cluster and from independent outside probers
- · Failover that runs the same way every time — because it runs continuously