A dedicated IP gives your server its own address instead of sharing one with other tenants. That matters for SSL, email deliverability, and avoiding "bad neighbor" effects in shared hosting or cloud.
SSL and HTTPS
- A dedicated IP lets you install your own SSL certificate (including wildcards) without depending on SNI alone.
- You do not share the IP with other sites, so there is no reputation mixing.
- Many modern setups use SNI on shared IPs; dedicated IPs remain useful for legacy or strict requirements.
Email deliverability
- For outbound email, a dedicated IP helps build and keep sender reputation.
- Follow best practices (SPF, DKIM, DMARC, gradual warm-up) so the IP is not flagged.
- On shared IPs, other tenants’ behavior can affect your deliverability; dedicated IPs isolate you.
When you need it
- Bare metal: Dedicated IPs are standard.
- VPS or cloud: Often optional; use when you need your own SSL, strict email, or compliance.
- Shared hosting: May not offer dedicated IPs; upgrading to VPS or dedicated is the usual path.
Summary
Use a dedicated IP when you need your own SSL, control over email reputation, or isolation from other tenants. In VPS or cloud it is often an add-on; for bare metal it is standard.
