Managed DNS and DNSSEC: are your uptime controls keeping up?

TL;DR: Managed DNS is positioned as a way to improve website performance, strengthen DNS integrity with DNSSEC, and preserve availability through failover, with DigiCert citing research that a one-second loading delay can reduce conversions by 7%. The governance point is that DNS remains part of identity-adjacent trust infrastructure, not just a traffic-routing utility.

NHIMG editorial — based on content published by DigiCert: Enterprise DNS for Chicago, IL: Driving Online Success

By the numbers:

• Research shows that a one-second delay in website loading time can lead to a 7% reduction in conversions.

Questions worth separating out

Q: How should security teams govern DNS for services that support identity and trust?

A: Security teams should treat DNS as part of the trust boundary for identity-adjacent services.

Q: Why does DNS integrity matter to IAM and NHI programmes?

A: DNS integrity matters because identity workflows depend on correct name resolution to reach certificate services, login endpoints, and machine trust dependencies.

Q: When does managed DNS become a resilience control rather than a routing feature?

A: Managed DNS becomes a resilience control when service availability depends on uninterrupted resolution and rapid failover.

Practitioner guidance

• Map DNS dependencies for identity-adjacent services Document which certificate, authentication, workload, and verification services rely on DNS resolution, then assign them to the same continuity review as other trust infrastructure.
• Validate DNSSEC on the records that matter most Confirm that high-value zones use DNSSEC and that validation succeeds from the resolvers your users and systems actually use.
• Test failover under realistic outage conditions Run resolution failover exercises that include primary server loss, network interruption, and provider-path degradation.

What's in the full article

DigiCert's full blog covers the operational detail this post intentionally leaves for the source:

• How DigiCert positions managed DNS for specific business use cases such as performance tuning, security, and high availability
• The practical framing behind DNSSEC and failover strategies for organisations managing customer-facing services
• The vendor's own explanation of how its managed DNS offering is intended to support scalable infrastructure and faster responses
• The original Chicago-focused business context and marketing framing that were condensed out of this analysis

👉 Read DigiCert's blog on managed DNS, DNSSEC, and high availability →

Managed DNS and DNSSEC: are your uptime controls keeping up?

Explore further

View Full Forum →  |  NHI Foundation Course →