The custom domain system for multi-tenant platforms
Engineered for multi-tenant infrastructure. Built to make SSL routing completely invisible.
Engineered to integrate perfectly with modern stacks
Built for Scale
Enterprise infrastructure, without the DevOps overhead.
Automated Let's Encrypt SSL
We intercept Server Name Indication (SNI) on the fly. Certificates are dynamically generated and cached in milliseconds before the request ever hits your application layer.
Zero-Downtime Hot Swapping
Powered by an in-memory Rust edge engine, Razix syncs active domains instantly from the database. Add thousands of tenants without ever dropping a connection or restarting your proxy.
Native Byte Streaming
Stop bottlenecking your own servers. Razix streams destination payloads back to the client natively, easily handling heavy framework chunks and massive files with a near-zero memory footprint.
Your app. Their domain. Totally invisible.
Razix sits silently between your users and your servers, handling the complex routing automatically.
You Integrate
Drop our API into your onboarding flow to register a new tenant's domain in the Razix Control Plane.
They Point
Your user adds a single CNAME record in their DNS provider (e.g., crm.theircompany.com points to domains.yoursaas.com).
We Route
Razix intercepts the traffic, secures the connection with SSL, injects the required headers (X-Forwarded-Host), and serves your exact application state for that specific tenant.
Infrastructure as an API
Integrate domain onboarding natively into your SaaS dashboard. No manual Nginx configurations, no cron jobs for renewals, and zero DevOps required. Give your users a seamless white-label experience directly within your own UI.
Engineered in Rust for the Edge
A look inside the Razix Data Plane architecture.
Microsecond Lookups
Powered by Arc<DashMap> for concurrent, lock-free routing. Active domain rules are held in memory for instantaneous resolution.
Intelligent Header Manipulation
Native stripping of incoming hosts and injection of X-Forwarded-For and X-Forwarded-Host ensures flawless Vercel and Next.js compatibility.
Connection Pooling
Configured with aggressive keep-alive connections and 60-second timeouts specifically optimized for streaming large React/Next.js chunks.
Asynchronous Database Polling
A dedicated Tokio background task keeps your proxy state and PostgreSQL database perfectly aligned without blocking the main event loop.
Transparent pricing built to scale with your platform.
No hidden bandwidth fees. No per-request surcharges. Pay only for the active custom domains your customers connect, powered by an enterprise-grade Rust edge engine.
Starter
For emerging platforms launching white-label features.
Growth
For scale-stage products needing deep workflow automation.
Enterprise
For mission-critical infrastructure demanding isolation and guarantees.
Frequently Asked Questions
Everything you need to know about routing, performance, and scaling your infrastructure with Razix.
Ready to scale your SaaS infrastructure?
Stop managing reverse proxies and cron jobs. Give your users the custom domains they want today.
Institutional-grade custom domains and routing infrastructure for modern B2B SaaS platforms.