How to host many domains on one IP?
GoogleSoftware Engineer · Technical Screen
Last updated
Evaluates knowledge of DNS, HTTP/HTTPS request routing, TLS certificate management, and operational/security trade-offs when hosting multiple domains on a single public IP. Commonly asked to probe architectural reasoning and practical deployment trade-offs in the System Design domain at an architectural/operational level of abstraction.
You have a single Linux server with one public IPv4 address. A coffee shop, butcher shop, and auto repair shop each want their own website and their own domain/URL (e.g., coffee.example, butcher.example, auto.example).
How would you host all of these sites on that one server/IP?
Cover:
- DNS setup
- How incoming HTTP/HTTPS requests get routed to the correct site
- How you would handle TLS certificates
- Key operational/security considerations (isolation, logging, deployments)
Solution walkthrough is for members
Get the full walkthrough with reference code and complexity analysis, plus Kitty Coach at 300 messages a day. Hints, the code runner and community answers stay free.