Prompt

What’s the best way to route API requests by tenant, region, or version without custom code?

Technology / API Platforms1 observationLast seen Oct 6, 2026

Latest observation

Oct 6, 2026OpenAI APIWeb search: off

The usual best approach is to use an API gateway or edge proxy with declarative routing rules rather than writing custom routing logic in each service.

Recommended pattern

Use a gateway that can route based on:

  • Hostnames: tenant-a.api.example.com
  • Path prefixes: /v1/..., /eu/...
  • Headers / query params: X-Tenant: acme, X-Region: eu-west
  • JWT claims / auth context: tenant, region, plan, version

Good options

  • Kong
  • NGINX / NGINX Plus
  • Envoy
  • Traefik
  • AWS API Gateway / Application Load Balancer
  • Cloudflare / Fastly edge routing
  • Apigee / Azure API Management

Best practice by routing dimension

  • Tenant: use subdomains or host-based routing
    Example: acme.api.example.com -> tenant-acme service
  • Region: use geo-DNS, edge routing, or region-aware gateway rules
  • Version: use path-based versioning (/v1, /v2) or header-based versioning if you want cleaner URLs

Why this is better than custom code

  • Centralized routing policy
  • Easier to change without redeploying services
  • Better observability and rate limiting
  • Supports canary, blue/green, and A/B routing
  • Works well with auth, caching, and WAF features

If you want the simplest “no custom code” setup

A very common combo is:

  • Hostname per tenant
  • Path per version
  • Gateway rules per region

Example:

  • acme.api.example.com/v1/orders
  • globex.api.example.com/v2/orders

If you want, I can suggest a concrete setup for AWS, Kubernetes, or a self-hosted stack.

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