DNS / CDN / EDGE DELIVERY
Engineering Domain, DNS & CDN Procurement Guide
Evaluate domain, DNS and CDN services for engineering sites using authoritative control, DNS resilience, TLS, caching, traffic management, security logging, migration and operational ownership.
Separate registrar, DNS and delivery roles
- Document which organization controls domain registration, authoritative DNS, TLS certificates and CDN configuration instead of leaving ownership implicit.
- Use role-based access and MFA for administrative accounts that can redirect or disable the public site.
- Record renewal and recovery contacts so domain continuity does not depend on one individual's account.
Define technical requirements
- Specify DNS record types, API or automation needs, TTL strategy, geographic delivery and whether dynamic applications require proxying or edge functions.
- For CDN use, define cacheable content, purge behavior, origin protection and how authenticated or dynamic responses must bypass caching.
- Require usable logging and change history for troubleshooting and incident response.
Migration and recovery
- Maintain an export or controlled record of DNS configuration and validate it after material changes.
- Plan provider migration before an outage by documenting origin endpoints, certificate handling and rollback steps.
- Test critical hostnames and monitoring from outside the provider's own network after changes.
Professional references
These references establish the standards, technical framework or authoritative engineering context used for this page. Vendor commercial terms are not used as engineering evidence.
- NIST SP 800-44 Version 2, Guidelines on Securing Public Web Servers — NIST guidance for installing, configuring, maintaining, monitoring and backing up public web servers.
- NIST Cybersecurity Framework — NIST risk-management framework for cybersecurity governance and controls.
- NIST SP 800-146, Cloud Computing Synopsis and Recommendations — NIST guidance on cloud opportunities, risks, performance, reliability, service terms and security considerations.
Engineering-use note. This PROFENG resource is for screening, comparison and technical preparation. Replace assumptions with project data and use the responsible qualified professional, applicable standards, codes and authority requirements for final design, compliance or safety decisions.
Commercial independence
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