Domains

Every app gets an address from the platform as soon as it is deployed. You can add domains you own next to it. HTTPS is set up for each of them, with a certificate that renews by itself.

The Platform URL is the address given to every app. It is under Domains and at the top of the app.

You can switch it off, for example once your own domain is live. If it is off and no custom domain is live, nothing answers for the app.

1. Add the hostname.

   Open Domains, choose Add a custom domain, enter the hostname (app.example.com) and choose Add domain.

2. Create the DNS records.

   The dashboard shows the records to add: a type, a name and a value. Create them at your DNS provider, exactly as shown.

   Your domain	Records
   A subdomain, app.example.com	One CNAME record
   A root domain, example.com	An A and an AAAA record

3. Wait for the check.

   The domain shows Waiting for DNS. It is checked every few minutes. Once the records are found it becomes Verified and the certificate is issued.

4. Open it.

   When the certificate is Active, the app answers at your domain, over HTTPS.

The platform URL costs nothing. The first domain of your own on each app is free. Each further one costs $0.15 a month, counted by the second while it is connected. See Billing.

There is nothing to set up. Each domain gets a certificate once its DNS records are in place, and the certificate is renewed for you. Requests over plain HTTP are sent to HTTPS.

One domain is the primary one. Choose Make primary to change it. The APP_URL variable holds the primary address, with https://.

Choose Remove domain. Traffic to that hostname stops reaching the app and its certificate is released. Remove the DNS records at your provider as well.

• Wildcards. *.example.com cannot be added. Add each hostname by itself.
• A domain that is in use elsewhere. A hostname can belong to one app only.