Executive Summary: Allowing SaaS tenants to bind custom domain names with automated Let\u2019s Encrypt SSL certificate issuance via CNAME DNS validation.

Allowing enterprise customers to use their own custom domain name (e.g. hrms.clientcompany.com) elevates your SaaS product.

1. Custom Domain DNS Validation


Tenants create a CNAME DNS record pointing hrms.clientcompany.com to app.yourdomain.com.

2. Automated SSL Certificate Provisioning


Using Caddy Server or Nginx with Let's Encrypt / ACME HTTP-01 challenge automation, SSL certificates are issued dynamically when custom domain requests arrive.

3. Route Matching Middleware


Laravel checks the incoming Host header against registered custom domain records in the database, mapping the request to the target tenant container seamlessly.