sousdomaine
Sousdomaine, known in English as subdomain, is a hostname that exists within a larger domain in the Domain Name System (DNS). For example, blog.example.com is a subdomain of example.com. In French contexts the term is sous-domaine; in English texts the equivalent is subdomain. Subdomains help organize services and hosts under a common second-level domain.
In the DNS hierarchy, a subdomain is created by adding a label to the left of the
Common uses include hosting distinct services under the same domain (for example, blog or shop), creating staging
Management considerations include DNS records (A, AAAA, CNAME, TXT, and MX where appropriate) and TLS certificates.
Related topics include DNS, DNS records, wildcard subdomains, and TLS certificates.