Hello Azure Community,
I wanted to share a quick update that may seem small at first glance but actually carries significant weight when it comes to availability and trust in your global applications. Azure Traffic Manager has officially raised its SLA for DNS resolution to 100%. Yes, you read that right — 100% SLA for all global DNS queries.
As someone who works closely with clients running multi-region or latency-sensitive applications, I can’t overstate how important this is. DNS resolution is a foundational layer, and knowing it’s now backed by a full SLA gives us a stronger guarantee of reliability — without any action required on our part.
What Changed?
Previously, Azure Traffic Manager offered a high-availability SLA (but not 100%) for DNS-based routing. With this update:
- All DNS queries through Azure Traffic Manager are now guaranteed to resolve to a healthy endpoint 100% of the time.
- No changes are needed on your side. If you’re using Traffic Manager today, your setup is already covered under the new SLA.
- This applies to all profiles and routing methods (Performance, Weighted, Priority, etc.).
Why It Matters
For many of us designing hybrid and geo-distributed solutions, DNS resolution is the first point of user interaction. A missed query means a failed connection, and that’s simply unacceptable for business-critical systems. This update removes one more piece of uncertainty from the availability chain.
I often recommend Azure Traffic Manager when customers are looking to optimize performance across regions or route traffic intelligently during maintenance or outages. With this SLA update, it’s even easier to justify as a reliable piece of the architecture puzzle.
This kind of commitment from Microsoft — offering zero-downtime guarantees for core services — is a strong signal of maturity in Azure’s global infrastructure. If you’re already using Traffic Manager, great — you’re covered. If not, and you’re dealing with global routing scenarios, this is a great time to revisit the architecture.
Let me know if you’ve had any experiences (good or bad) with Traffic Manager recently. I’d love to hear how it’s working in real-world environments.
Talk soon,
Eduardo