Aqua Security vs Microsoft Defender for Cloud: 2026 CNAPP comparison
Cloud Security Compare editors · Matchups reviewed September 2026 · Editorial assessment
The short version
Microsoft Defender for Cloud scores higher overall, 4.0 to 3.7, and wins 4 of seven criteria: agentless coverage, AI workload security, ecosystem and integrations and pricing transparency. Aqua wins 2: runtime protection and code-to-cloud security. They tie on risk prioritization. Choose Aqua if detecting and blocking attacks inside running workloads is the main job; choose Defender if you want to model cost from public pricing before a sales call.
Aqua Security
3.7/ 5
Microsoft Defender for Cloud
4.0/ 5
Aqua Security wins 2 criteria, Microsoft Defender for Cloud wins 4, 1 tied.
Who wins Aqua vs Defender?
Defender is ahead by 0.32 points on exact totals. Aqua's wins cover 30% of our weights; Defender's cover 52%; tied criteria cover 18%. The largest single gap is on pricing transparency, where Defender leads by 3.1.
Where each design starts, on our reading: Aqua, container pipeline and runtime enforcement; Defender, posture plus Defender for Endpoint.
How do Aqua and Defender compare on each criterion?
| Criterion | Weight | Aqua | Defender | Winner |
|---|---|---|---|---|
| Agentless coverage and time to value | 18% | 3.4 | 3.7 | Defender +0.3 |
| Runtime protection depth | 16% | 4.5 | 4.0 | Aqua +0.5 |
| Risk prioritization and attack paths | 18% | 3.9 | 3.9 | Tie |
| Code-to-cloud and AppSec | 14% | 4.2 | 3.8 | Aqua +0.4 |
| AI workload security | 12% | 3.7 | 4.0 | Defender +0.3 |
| Ecosystem and integrations | 12% | 3.8 | 4.3 | Defender +0.5 |
| Pricing transparency | 10% | 1.5 | 4.6 | Defender +3.1 |
Agentless coverage and time to value
Weight 18%
Aqua: Offers agentless posture visibility, but the platform's depth comes from kernel-layer enforcement.
Defender: Agentless VM, secrets and Kubernetes scanning exist, but only in the paid Defender CSPM and Defender for Servers Plan 2 tiers.
Runtime protection depth
Weight 16%
Aqua: Kernel-layer enforcement blocks attacks without killing the container and preserves memory evidence.
Defender: Server runtime protection comes through Defender for Endpoint EDR across Azure, AWS, GCP and on-premises machines.
Risk prioritization and attack paths
Weight 18%
Aqua: Ranks vulnerabilities by reachability, EPSS scores and evidence of active exploitation.
Defender: Attack path analysis, cloud security explorer and internet exposure analysis sit in Defender CSPM.
Code-to-cloud and AppSec
Weight 14%
Aqua: Scans images and repositories for vulnerabilities, secrets and misconfigurations and blocks noncompliant artifacts in the pipeline; Aqua maintains Trivy.
Defender: Code-to-cloud mapping and agentless code-to-cloud container assessment are included in Defender CSPM.
AI workload security
Weight 12%
Aqua: GenAI application security from code to runtime and detection of unsanctioned AI usage.
Defender: AI-SPM in Defender CSPM plus Defender for AI Services, billed per 1,000 tokens.
Ecosystem and integrations
Weight 12%
Aqua: Trivy's open-source reach, FedRAMP High authorization and support for disconnected environments.
Defender: Native to Azure and Microsoft's security stack, with AWS and GCP resources covered and billed alongside Azure.
Pricing transparency
Weight 10%
Aqua: No public price list found.
Defender: Foundational CSPM is free, paid plans bill per resource with a public cost calculator, and there is a 30-day free trial.
Scores are 0 to 5. The marker leans toward the stronger vendor; a gap of 1.5 or more pins it to the end. How to read these bars
How do Aqua and Defender price?
| Pricing fact | Aqua | Defender |
|---|---|---|
| Published pricing | Not published. Contact sales. | Published per resource on the Azure pricing page and cost calculator; Foundational CSPM free; 30-day free trial |
| Billing basis | Not published. Contact sales. | Published per billable resource on the Azure pricing page and cost calculator (for serverless, 8 Lambda functions count as 1 billable unit). Foundational CSPM free. Defender for AI Services billed per 1,000 tokens. Free for the first 30 days. |
| Pricing transparency score | 1.5 | 4.6 |
Source: Aqua platform · Reviewed Sep 2026
Source: Defender for Cloud pricing · Reviewed Sep 2026
Microsoft states that from 27 October 2026 Foundational CSPM becomes opt-in for new Azure subscriptions.
What are the key differences?
| Fact | Aqua Security | Microsoft Defender for Cloud |
|---|---|---|
| Deployment | Agentless posture plus kernel-layer runtime enforcement; public cloud, private cloud and disconnected environments | Free Foundational CSPM; agentless scanning in paid Defender CSPM and Defender for Servers Plan 2; agent-based EDR through Defender for Endpoint |
| Runtime sensor | Kernel-layer enforcement that blocks attacks without killing the container | Microsoft Defender for Endpoint (Defender for Servers Plan 1 and Plan 2) |
| Clouds named | Public cloud, private cloud and disconnected (air-gapped) environments | Azure, AWS, Google Cloud, on-premises via Azure Arc |
| Code security | Image and repository scanning for vulnerabilities, secrets and misconfigurations; pipeline gating | Code-to-cloud mapping and agentless code-to-cloud container assessment (Defender CSPM) |
| AI security | GenAI application security from code to runtime; unsanctioned AI usage detection | AI-SPM in Defender CSPM; Defender for AI Services billed per 1,000 tokens |
| Ownership | Aqua Security | Microsoft |
| Public pricing | Not published. Contact sales. | Published per resource on the Azure pricing page and cost calculator; Foundational CSPM free; 30-day free trial |
| Open-source project | Trivy (maintained by Aqua Security, Apache-2.0) | None named |
Aqua Security sources: Aqua platform · Trivy · Reviewed Sep 2026
Microsoft Defender for Cloud sources: Defender CSPM plans · Defender for Servers · Defender for Cloud pricing · Reviewed Sep 2026
Microsoft states that from 27 October 2026 Foundational CSPM becomes opt-in for new Azure subscriptions.
When should you choose Aqua?
- Detecting and blocking attacks inside running workloads is the main job. Aqua scores 4.5 against 4.0: Kernel-layer enforcement blocks attacks without killing the container and preserves memory evidence.
- Developers will fix issues in code and you want cloud risks traced back to the repository. Aqua scores 4.2 against 3.8: Scans images and repositories for vulnerabilities, secrets and misconfigurations and blocks noncompliant artifacts in the pipeline; Aqua maintains Trivy.
When should you choose Defender?
- You want to model cost from public pricing before a sales call. Defender scores 4.6 against 1.5: Foundational CSPM is free, paid plans bill per resource with a public cost calculator, and there is a 30-day free trial.
- You want wide integration coverage and a larger platform around the CNAPP. Defender scores 4.3 against 3.8: Native to Azure and Microsoft's security stack, with AWS and GCP resources covered and billed alongside Azure.
Frequently asked questions
Is Aqua or Defender better?
Microsoft Defender for Cloud scores higher overall, 4.0 to 3.7, and wins 4 of seven criteria: agentless coverage, AI workload security, ecosystem and integrations and pricing transparency. Aqua wins 2: runtime protection and code-to-cloud security. This is an editorial assessment of public vendor material, not a test result.
Where is Aqua stronger than Defender?
On runtime protection and code-to-cloud security: runtime protection depth 4.5 against 4.0; code-to-cloud and AppSec 4.2 against 3.8.
Do Aqua and Defender publish prices?
Aqua: Not published. Contact sales. Defender: Published per resource on the Azure pricing page and cost calculator; Foundational CSPM free; 30-day free trial.