Is Microsoft Defender or OneTrust better?

Neither clearly leads. Microsoft Defender starts at $12/month and OneTrust at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Microsoft Defender or OneTrust?

Microsoft Defender starts at $12/month and OneTrust at On request.

Does Microsoft Defender or OneTrust run on more platforms?

Microsoft Defender runs on Web. OneTrust runs on Web, API, Cloud.

What is Microsoft Defender best used for?

Microsoft Defender is most often used for endpoint security and threat protection, identity and access security, email threat protection, saas application security monitoring. Of those, endpoint security and threat protection and identity and access security are not what OneTrust is typically brought in for.

Cybersecurity · head to head

Microsoft Defender vs OneTrust

Microsoft Defender

Cybersecurity

Always-on protection for you and your family's data and devices

From: $12/month
Rated: -

Full review Website

OneTrust

Cybersecurity

Enterprise AI governance and data compliance platform.

From: On request
Rated: -

Full review Website

The short version

Each has a real cost: Microsoft Defender defender Suite requires existing Microsoft 365 E3 or equivalent base licensing; OneTrust complex usage-based pricing model with multiple meters (admin users, inventory size, daily visitors, data subjects) making total cost unpredictable
Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Microsoft Defender and OneTrust actually diverge.

Attributes where Microsoft Defender and OneTrust differ
Attribute	Microsoft Defender	OneTrust
Starting price	$12/month	On request
Pricing model	subscription	usage-based
Platforms	Web	Web, API, Cloud

Identical on both: free tier (No), user rating (Not yet rated), category (Cybersecurity).

What people use each for

The jobs each tool is most often brought in to do.

Microsoft Defender

Endpoint security and threat protectionnot OneTrust
Identity and access securitynot OneTrust
Email threat protectionnot OneTrust
SaaS application security monitoringnot OneTrust

OneTrust

Fortune 500 enterprises managing multi-framework compliance (GDPR, SOC 2, EU AI Act, DORA, NIS2)not Microsoft Defender
Organisations implementing responsible AI governance and monitoring AI systemsnot Microsoft Defender
Companies with global data operations requiring consent and privacy automation at scalenot Microsoft Defender
Enterprises managing complex vendor ecosystems with third-party risk assessmentnot Microsoft Defender
Regulated industries (finance, healthcare, insurance) requiring continuous compliancenot Microsoft Defender

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Microsoft Defender

Defender Suite requires existing Microsoft 365 E3 or equivalent base licensing
Some Defender products use pay-as-you-go pricing with variable costs
Prices vary based on Microsoft agreements, requiring sales contact for custom quotes

OneTrust

Complex usage-based pricing model with multiple meters (admin users, inventory size, daily visitors, data subjects) making total cost unpredictable
No published pricing examples or per-unit costs; all pricing requires custom quotes
Each solution area uses different pricing metrics, requiring complex calculations for multi-solution purchases
Enterprise-only positioning (Fortune 500 focus) suggests premium pricing, discouraging mid-market or startup adoption
Platform complexity and multiple solution areas may result in significant implementation and ongoing costs not disclosed upfront

Pricing, plan by plan

Microsoft Defender

$12/month

Microsoft Defender Suite$12/month
- Endpoint protection
- Identity threat detection
- Email security
Microsoft 365 E5 with Defender$60/month
- Includes Defender Suite
- Microsoft Teams included
- Comprehensive security and compliance
Microsoft Defender Vulnerability Management Add-on$2/month
- Vulnerability scanning and management
- One-month free trial available
- Annual commitment required

OneTrust

On request

AI Governance$undefined/variable
- Pricing by admin users and AI inventory size
- AI compliance lifecycle management
- Control enforcement and monitoring
Consent & Preferences$undefined/variable
- CMP Base: priced by average daily visitors
- CMP Suite: expanded privacy experiences
- Universal Consent: metered by data subject profiles
Privacy Automation$undefined/variable
- Priced by users and privacy asset inventory
- Internal operations automation
- Data subject request handling
Tech Risk & Compliance$undefined/variable
- Governance and risk management across 50+ standards
- Priced by admin users and asset inventory

Which should you pick?

Choose Microsoft Defender if

Nothing in the data separates Microsoft Defender from OneTrust on the points above - pick on price and on how each one feels to use.

Microsoft Defender review

Choose OneTrust if

You work on Web, API, Cloud.

OneTrust review

Questions people ask

Is Microsoft Defender or OneTrust better?: Neither clearly leads. Microsoft Defender starts at $12/month and OneTrust at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Microsoft Defender or OneTrust?: Microsoft Defender starts at $12/month and OneTrust at On request.
Does Microsoft Defender or OneTrust run on more platforms?: Microsoft Defender runs on Web. OneTrust runs on Web, API, Cloud.
What is Microsoft Defender best used for?: Microsoft Defender is most often used for endpoint security and threat protection, identity and access security, email threat protection, saas application security monitoring. Of those, endpoint security and threat protection and identity and access security are not what OneTrust is typically brought in for.

Answered from the vendors’ own pages

Microsoft Defender: How much does Microsoft Defender Suite cost?

Microsoft Defender Suite costs $12/user/month (paid yearly), but requires existing Microsoft 365 E3 or equivalent base licensing. It includes endpoint protection, identity threat detection, email security, and SaaS application monitoring.

Source

OneTrust: How many case studies does OneTrust have?

OneTrust showcases 74+ customer case studies across multiple industries and regions, with examples from banking, insurance, hospitality and technology.

Source

Microsoft Defender: What add-ons are available for Microsoft Defender?

Microsoft Defender Vulnerability Management Add-on costs $2/user/month with annual commitment and includes a one-month free trial. Additional pay-as-you-go products include External Attack Surface Management, Cloud Security Posture Management, and Sentinel.

Source

OneTrust: What compliance standards does OneTrust support?

OneTrust covers tech risk and compliance across 50+ standards including GDPR, SOC 2, EU AI Act, DORA and NIS2.

Source

Microsoft Defender: Is Defender included in Microsoft 365 E5?

Yes, Microsoft Defender Suite is included in Microsoft 365 E5 at $60/user/month (paid yearly with Teams). Prices may vary based on Microsoft agreements, requiring contact with Sales for customized quotes.

Source

OneTrust: Does OneTrust automate data detection?

Yes. OneTrust automatically detects and classifies sensitive data across 200+ connectors, identifying where data lives and what regulatory requirements apply.

Source

Microsoft Defender vs OneTrust

Microsoft Defender

OneTrust

The short version

Where they differ

What people use each for

Microsoft Defender

OneTrust

Where each one falls short

Microsoft Defender

OneTrust

Pricing, plan by plan

Microsoft Defender

OneTrust

Which should you pick?

Choose Microsoft Defender if

Choose OneTrust if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Microsoft Defender

More on OneTrust

Keep looking

Other head to heads