Multi-Domain Certificate Strategies

Subject Alternative Name (SAN) certificates, also called Multi-Domain or Unified Communications Certificates (UCC), support numerous unrelated domains on single certificates. This approach reduces management overhead but requires reissuing certificates when adding domains.

Plan domain coverage strategically. Include all production domains, common typos, and future expansions. Consider separate certificates for different security zones—avoid mixing public-facing domains with internal administrative interfaces on the same certificate.