What a subdomain is
A subdomain is a name before the main domain, such as panel.example.com. It can point to a separate application or server and have its own configuration. It is not independently registered, although it can host a clearly separate website.
When we use one
We use subdomains for operational dashboards, customer areas, documentation, shops or test environments when technology and maintenance responsibilities justify the separation. We do not separate an ordinary section merely for a convenient name. We consider its relationship with the main site.
DNS, server and HTTPS
We check DNS records, server recognition of the hostname and certificate coverage. We verify renewal, CDN settings, security rules, backups and mail configuration where applicable. Adding a DNS record alone does not complete deployment.
Cookies, access and environments
We limit cookie scope, sessions and API access to what is needed. Overly broad cookies can expose information to other subdomains. We protect staging against unauthorised access and indexation, and protect sensitive dashboards with authentication and permissions.
SEO, analytics and migration
We choose a subdomain or directory for architecture and business needs rather than assuming an automatic SEO advantage. We align links, canonical URLs, sitemaps and journey measurement. Address changes require a mapping, redirects and indexation checks.
Our approach at PAR HOUSE Agency
We use subdomains for previews, applications and separate systems where they provide technical value. We document dependencies and ownership. Moving to the final domain includes checks of security, addresses, measurement and search visibility.
