DNS performance for eCommerce: what IAM teams miss

TL;DR: DNS is presented as a core driver of eCommerce speed, resilience, and customer experience, with query latency and outage history shaping whether sites stay available during peak demand, according to DigiCert. The governance lesson is that availability controls and failover planning are operational trust issues, not just infrastructure tuning.

NHIMG editorial — based on content published by DigiCert: Top 6 DNS Solutions for eCommerce Managed DNS

By the numbers:

• The forecast for sales is expected to grow from 2020’s $4.28 trillion mark to over $6 trillion by 2024.
• The average cost of downtime is $5,600 per minute for the average company.
• 74% of shoppers claim their customer experience affects their loyalty.

Questions worth separating out

Q: What breaks when DNS fails in an eCommerce environment?

A: When DNS fails, customers cannot reliably reach the storefront even if the application, hosting, and payment systems are healthy.

Q: Why do DNS outages matter so much for online retail?

A: DNS outages matter because online retail depends on constant reachability and low latency.

Q: What do security and operations teams get wrong about DNS resilience?

A: They often treat redundancy as a box to check instead of a path to test.

Practitioner guidance

• Benchmark DNS latency by user region Measure authoritative response times where customers actually browse and buy, then compare providers under the same regional conditions.
• Validate secondary DNS synchronisation Confirm that zone files replicate cleanly from primary to secondary providers after every record change.
• Review outage history before provider selection Check how often a DNS host has experienced regional or global outages, then weigh that record against business tolerance for downtime.

What's in the full article

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

• Provider-by-provider speed comparisons across the US, worldwide, and India for ranking DNS performance
• Specific outage history examples for major DNS providers that help with supplier risk assessment
• Step-by-step explanations of secondary DNS, DNS failover, and Global Traffic Director configuration choices
• Free troubleshooting tools and the practical uses of each for diagnosing latency and record issues

👉 Read DigiCert's analysis of DNS solutions for eCommerce managed DNS →

DNS performance for eCommerce: what IAM teams miss?

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