OneTrust vs Nessus: Which Cloud Observability tool is Best in 2025?

All these tools OneTrust , Nessus offer flexible pricing models suitable for IT operations teams, DevOps engineers seeking AI-powered solutions to enhance their Cloud Observability efforts.

OneTrust

Starting from
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Nessus

Starting from
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These AI tools are among the best Cloud Observability tools available in 2025. For IT operations teams, DevOps engineers, tools like OneTrust , Nessus help streamline the Cloud Observability process by offering AI-powered features.

What is OneTrust?

OneTrust is a globally recognized privacy and data governance platform that empowers organizations to manage data privacy, security, and compliance with unparalleled efficiency. Trusted by over 14,000 customers, including Adobe and Pfizer, it automates workflows for GDPR, CCPA, and ISO 27001 compliance, offering robust tools for consent management, third-party risk assessment, and AI governance. Its compliance solutions for enterprises integrate seamlessly with existing systems, enabling businesses to build trust through responsible data use while navigating complex regulatory landscapes.

What is Nessus?

Nessus is a leading vulnerability assessment tool developed by Tenable, Inc., widely recognized as the industry’s most trusted scanner for identifying security weaknesses across networks, devices, applications, and cloud environments. Launched in 1998 as an open-source project by Renaud Deraison, it transitioned to a proprietary model in 2005 and now offers two enterprise versions: Nessus Professional and Nessus Expert. With over 252,000 plugins and 100,000 plus CVEs, Nessus delivers high-accuracy scans to detect vulnerabilities, misconfigurations, and compliance issues. It supports unlimited IT assessments, customizable templates (450+), and vulnerability prioritization using CVSS v4, EPSS, and Tenable’s VPR. Nessus Expert extends capabilities to web application scanning, external attack surface monitoring, and cloud infrastructure audits.

OneTrust
(4.6/5)
  • Accuracy and Reliability:
    4.7
  • Customization and Flexibility:
    4.5
  • Data Privacy and Security:
    4.9
  • Ease of Use:
    4.6
  • Functionality and Features:
    4.8
  • Integration Capabilities:
    4.7
  • Performance and Speed:
    4.4
  • Support and Resources:
    4.3
Nessus
  • No ratings found!
OneTrust
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Nessus
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OneTrust

Pros

Automates GDPR and CCPA compliance.

Seamless integrations with Salesforce and ServiceNow.

Comprehensive AI and privacy governance.

High ROI for large enterprises.

Streamlines third-party risk management.

Cons

Costly for smaller businesses.

Steep learning curve for beginners.

Occasional peak-time support delays.

Complex for niche workflows.

Not Enough Data!

If you're looking for other Cloud Observability tools for IT operations teams, DevOps engineers, you can also explore Dynatrace, Datadog, Elastic, Lacework FortiCNAPP, which are highly rated in 2025.

OneTrust
  • OneTrust
  • London, UK
Nessus
  • Not Data Available!