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Managing Multiple Apps with Subdomains

DNSinfrastructuredeploymentarchitecture

As I built more applications, I needed a cleaner structure than keeping everything on one domain path.

The model

I use a consistent pattern:

app.strong.fm          - Landing page
app.strong.fm/app      - The application itself

Examples:

  • aired.strong.fm and aired.strong.fm/app
  • trips.strong.fm and trips.strong.fm/app

Why this works

1. Clear structure

Each product has its own space and URL identity.

2. Better product messaging

Each app can have its own landing page and value proposition.

3. Independent releases

Apps can be deployed separately without affecting each other.

4. More professional URLs

Subdomains make the portfolio easier to understand.

Technical setup

With AWS Amplify, setup is straightforward:

  1. Add custom domain in Amplify
  2. Add required DNS records
  3. Wait for SSL provisioning
  4. Go live

What I learned

  • Lower DNS TTL during migrations for quicker rollback
  • Validate on preview URLs first
  • Keep DNS records documented to avoid operational drift