Skip to main content
Welcome to the practical guide for deploying Azure DDoS Protection. This article explains why DDoS protection is essential in cloud environments, how Azure detects and mitigates attacks, and the concrete steps to keep your services resilient. You will learn:
  • What DDoS (Distributed Denial of Service) attacks are and how they impact cloud applications.
  • The common DDoS attack categories and how to recognize them.
  • The differences between Azure DDoS Protection Basic and Standard tiers and when to choose each.
  • Key Standard-tier capabilities such as adaptive tuning, telemetry, and integration with Azure monitoring services.
  • How to create a DDoS Protection Plan and associate it with Azure resources (Virtual Networks, Public IPs).
We start by defining the attack types and impacts, then compare protection tiers, and finish with the deployment checklist and useful references.
A slide titled "Learning Objectives" with a teal gradient panel on the left and four numbered items on the right. The objectives cover understanding DDoS and its impact, identifying DDoS attack types, exploring Azure DDoS protection tiers, and reviewing Azure DDoS protection features.
Basic DDoS protection is provided automatically at the Azure platform level. If you need advanced mitigation, per‑VNet coverage, telemetry, and reporting, deploy Azure DDoS Protection Standard.

​
What is a DDoS attack?

A Distributed Denial of Service (DDoS) attack attempts to make an online service unavailable by overwhelming it with traffic or by exhausting resources. In cloud environments, DDoS attacks can cause:
  • Service outages and increased latency.
  • Resource exhaustion (compute, memory, or application-layer resources).
  • Increased operational costs due to autoscaling or mitigation actions.
  • Reputational damage and potential compliance issues.

​
Common DDoS attack types

Understanding the attack methods helps you choose appropriate mitigations and monitoring.
Attack CategoryWhat it targetsTypical examplesPrimary mitigation approach
VolumetricNetwork bandwidthUDP floods, amplification attacks (DNS, NTP)Rate limiting, scrubbers, network-level filtering
ProtocolNetwork/transport stackSYN floods, TCP connection floodsStateful inspection, SYN cookies, protocol hardening
Application/resource-levelApplication endpoints or service resourcesHTTP(S) floods, slow POSTsWAF rules, request throttling, autoscaling with protections

​
Azure DDoS Protection tiers

Azure provides two protection tiers. Choose based on risk profile, architecture, and compliance needs.
TierIncluded coverageKey featuresWhen to use
BasicPlatform-level defense for all Azure services (free)Baseline protections implemented by Azure networkingSmall workloads or where basic platform protection suffices
StandardPer‑VNet protection (paid)Adaptive tuning, near real-time telemetry, mitigation reports, integration with Azure Monitor & Network WatcherInternet-facing applications, high-risk workloads, or regulated environments requiring detailed telemetry and SLAs
Key links:

​
Key features of DDoS Protection Standard

  • Adaptive tuning: Automatically learns your application’s traffic patterns to reduce false positives and minimize impact during mitigation.
  • Near real-time telemetry: Provides metrics and logs to monitor detected attack vectors and mitigations.
  • Mitigation reports: Detailed summaries of detected attacks and actions taken.
  • Integration with Azure Monitor and Network Watcher: Consolidate alerts, diagnostics, and logs for operational workflows and SIEM ingestion.
  • SLA-backed mitigation: Enhanced guarantees for mitigation actions compared to Basic.

​
High-level deployment steps

Follow these steps to deploy Azure DDoS Protection Standard and protect your resources:
  1. Create a DDoS Protection Plan in the target Azure subscription and region.
  2. Associate the Protection Plan with one or more Virtual Networks (VNets). Protection is applied at the VNet level and covers resources within those VNets.
  3. Ensure internet-facing Public IPs and services are deployed inside the protected VNets.
  4. Configure logging and monitoring:
    • Enable Azure Monitor metrics and alerts for DDoS events.
    • Integrate mitigation reports and diagnostics with your SIEM or Log Analytics workspace.
  5. (Optional) Combine with Azure Application Gateway WAF or third-party WAFs for application-layer protections and fine-grained request filtering.
  6. Periodically review mitigation reports and adaptive tuning recommendations to optimize protections.
Practical checklist:
  • Create DDoS Protection Plan
  • Associate with each VNet that contains internet-facing resources
  • Enable diagnostics and export logs to Log Analytics
  • Configure alerting in Azure Monitor
  • Test incident response runbook (simulate failover and monitoring)

​
Best practices

  • Protect every VNet that contains internet-facing workloads—DDoS Protection Standard applies at the VNet level.
  • Use layered defenses: combine network-level DDoS protection with WAF rules, API throttling, and resilient application design.
  • Enable logging and automated alerting so you get near real-time visibility into attacks.
  • Regularly review mitigation reports to fine-tune thresholds and reduce false positives.
  • Include DDoS scenarios in your incident response plan and conduct tabletop or live exercises.
This guide covered the fundamentals and practical steps to deploy Azure DDoS Protection Standard. Use the references above to drill into deployment instructions, API usage, and automation options to fit your environment.

Watch Video