Conversions API Gateway or Signals Gateway: AWS ECS Custom Domain Setup

Updated: Jan 23, 2026

1: Domain Setup by ACM

1.1 Agency domain setup

Step 1: Launch Domain Management Page, and select AWS Certificate Manager

Step 2: Launch Domain Management Page

Step 3: Choose the data routing domain (required) and web access domain (required), and click 'Continue'

Step 4: Set DNS records in your DNS service (for example, Amazon route 53), and wait for the status to change to Complete.

Step 5: Wait until the domains are active.

1.2 Tenant domain setup

For tenants (accounts) that are created by the agency, they can create their own first party domains.

Step 1: Launch Data routing Page (Accounts settings - > Data routing).

Step 2: Click optimize button, and input the tenant domains.

Step 3: Confirm the domain. Set DNS records in your DNS service (for example, Amazon route 53), and wait for the status to change to Complete.

Step 4: Wait until the domain setup is complete.

2: Domain Setup by Cloudflare

2.1 Agency domain setup

Step 1: Choose Cloudflare as domain setup option.

Step 2: Follow the UI instructions to enter token and domain.

Step 3: Follow the UI instructions to enter token and domain.

2.2 Tenant domain setup

For tenants (accounts) that are created by the agency, they can create their own first party domains.

Step 1: Launch Data routing Page (Accounts settings - > Data routing).

Step 2: Set DNS records in your DNS service (for example, Amazon route 53) with a CNAME record of the tenant domain to the agency domain, and then input the tenant domain in the website.

Step 3: Wait until the domain setup is complete.