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23/06/2026 7:05 pm
TL;DR: Managed DNS is presented as a way to improve website speed, protect DNS integrity with DNSSEC, and maintain availability through secondary DNS and failover, according to DigiCert. For identity and security teams, the real lesson is that availability controls and authenticity controls must be designed together, not treated as separate operational concerns.
NHIMG editorial — based on content published by DigiCert: Fast Global DNS Presence in Sydney, AU Managed DNS
By the numbers:
- Research shows that a one-second delay in website loading time can lead to a 7% reduction in conversions.
- When AWS credentials are exposed publicly, attackers attempt access within an average of 17 minutes.
Questions worth separating out
Q: How should security teams govern DNS for identity-dependent services?
A: Security teams should treat DNS as part of the control plane for identity-dependent services, not as background infrastructure.
Q: Why does DNSSEC matter for IAM and machine services?
A: DNSSEC matters because it helps verify that DNS answers were not altered in transit.
Q: When should organisations prioritise secondary DNS over a single authoritative source?
A: Organisations should prioritise secondary DNS whenever downtime would interrupt customer access, internal authentication, or machine-to-machine traffic.
Practitioner guidance
- Review DNS as part of identity-dependent service governance Map which authentication portals, APIs, and machine services depend on DNS resolution before access can occur.
- Enable DNSSEC where authoritative and resolver support is available Confirm zone signing, key management, and validation support across critical domains.
- Test secondary DNS under real failure conditions Validate that failover answers are current, reachable, and correct during primary service outages.
What's in the full article
DigiCert's full blog covers the operational detail this post intentionally leaves for the source:
- Performance and delivery mechanics for managed DNS in geographically distributed environments
- DNSSEC implementation details for teams validating record integrity and authenticity
- Secondary DNS and failover configuration specifics for maintaining availability during outages
- Product-oriented guidance on how DigiCert positions DNS Trust Manager for operational use
👉 Read DigiCert's blog on managed DNS performance, security and failover →
Managed DNS in Sydney: are speed, DNSSEC and failover enough?
Explore further
25/06/2026 2:54 am
DNS resilience is now an identity dependency, not just a network dependency. Authentication portals, service endpoints, and machine-to-machine workflows all rely on DNS before any identity control can even begin. When DNS fails, the access path fails first, which means identity programmes inherit a hidden availability risk that sits below IAM but still shapes its outcome. Practitioners should treat DNS as part of the trust boundary.
A few things that frame the scale:
- Only 1.5 out of 10 organisations are highly confident in their ability to secure NHIs, compared to nearly 1 in 4 for securing human identities, according to The State of Non-Human Identity Security.
- 85% of organisations lack full visibility into third-party vendors connected via OAuth apps, according to The State of Non-Human Identity Security.
A question worth separating out:
Q: What is the difference between DNS performance tuning and DNS governance?
A: DNS performance tuning focuses on speed, load handling, and response efficiency. DNS governance covers ownership, integrity, failover readiness, and change discipline. A system can be fast and still be poorly governed if records are stale, unsigned, or unmanaged across environments that depend on it.
👉 Read our full editorial: Managed DNS in Sydney highlights speed, security and uptime trade-offs
