# Custom Domain > Fully-managed custom-domain onboarding for SaaS: automatic DNS > configuration, automatic SSL (Let's Encrypt), and a reverse-proxy edge. Your > users bring their own domain; Custom Domain detects the DNS provider, writes > the records (or guides a manual step), verifies ownership, issues HTTPS, and > serves the traffic. ## Key facts - Fully-managed service: connect, secure, and serve customer domains with no infrastructure to run - DNS auto-configuration across 19 providers, plus provider-hosted one-click setup - Automatic HTTPS via Let's Encrypt at an on-demand TLS edge - Reverse-proxy edge that terminates TLS for connected domains and routes to your origin - REST API, webhooks, multi-tenant isolation, ownership verification (value-checked) ## Pages - [Home](https://customdomain.ai/): Product overview and how it works. - [Docs](https://app.customdomain.ai/docs): Quickstart, DNS providers, API reference, security. - [Get started](https://app.customdomain.ai/signup): Create an account. ## DNS providers auto-configured Cloudflare, GoDaddy, Route 53, Namecheap, IONOS, DigitalOcean, Vercel, Netlify, Google Cloud DNS, Azure DNS, Linode, Vultr, Hetzner, Gandi, deSEC, DNSimple, Porkbun, Name.com — plus provider-hosted one-click consent, and a guided manual flow for everything else. ## Optional - [Architecture](https://app.customdomain.ai/docs/concepts/architecture): The control-plane / edge two-plane design. - [Security](https://app.customdomain.ai/docs/security/overview): Tenant isolation, secrets at rest, ownership checks. - [Full docs index](https://app.customdomain.ai/docs/llms.txt): Machine-readable index of every documentation page.