What a Microsoft 365 audit tool needs to do in 2026
An audit tool earns its place when it does four things well, end to end, across the whole stack and not just identity.
Find misconfigurations
Surface risky settings across Microsoft 365, Intune, Entra ID, and Purview, not a narrow slice of identity.
Map to compliance
Tie each finding to recognized frameworks so an audit becomes evidence, not guesswork.
Produce audit-ready reports
Clear output that an executive, a client, or an auditor can read without translation.
Help you remediate
A finding is half the job. The fix, ranked and validated, is what closes the gap.
The categories of Microsoft 365 audit tools
Each category has real strengths and honest limits. Most mature teams end up using more than one.
Native Microsoft tooling
Microsoft Secure Score, Microsoft Defender, and the Entra admin center are the baseline. They are built in, free with most licensing, and authoritative on Microsoft's own recommendations.
Pro: First-party, no extra cost, always current with Microsoft's guidance.
Con: A score is not a ranked action list, cross-tenant reporting is limited, and remediation is left to you.
Compare in depth: Microsoft Secure Score · Microsoft Defender
Open-source and security-as-code
CISA ScubaGear and Maester check your tenant against published baselines from a script you can read. They are transparent, free, and great for repeatable verification in a pipeline.
Pro: Transparent, free, version-controlled, and easy to automate.
Con: Raw pass/fail output, no ranked prioritization, and no validated remediation guidance.
Microsoft 365 management and governance platforms
Platforms such as CoreView and Quest handle broad Microsoft 365 administration, delegation, license management, and governance at scale. Security is one part of a wider management story.
Pro: Broad operational management, delegation, and governance across large estates.
Con: Security posture depth is lighter than a dedicated posture tool, and the focus is management first.
RMM and patch tools
Remote monitoring and management and patch tools keep endpoints running and up to date. They are operational by design and essential for IT delivery.
Pro: Strong on endpoint operations, patching, and day-to-day device health.
Con: Not built for Microsoft 365 posture or compliance mapping, so they leave the configuration audit gap open.
See how the categories line up: all comparisons and integrations
Dedicated Microsoft 365 security posture and remediation
This is the category Siemserva sits in. It runs 650+ checks across Microsoft 365, Intune, Entra ID, and Purview, ranks posture by Severity, maps every finding to compliance frameworks, and produces AI-generated, Senserva-validated remediation. It supports MSP multi-tenant work, and AI is optional and bring-your-own-model via MCP.
Pro: Deep, ranked posture plus the fix, compliance mapping, multi-tenant, no agents, no cloud service.
Worth knowing: it complements native and open-source tools rather than replacing the value they already give you.
What to look for when you choose
Use this checklist to cut through marketing and match a tool to how your team actually works.
- Coverage breadth. Does it span Microsoft 365, Intune, Entra ID, and Purview, or stop at a few identity settings?
- Compliance mapping. Are findings tied to recognized frameworks so the audit produces evidence?
- Remediation, not just findings. Does it tell you how to fix each issue, ranked by Severity, or just hand you a list?
- Multi-tenant and MSP support. Can you run it cleanly across many client tenants if that is your model?
- AI optionality. If it uses AI, is it optional, transparent, and bring-your-own-model rather than locked in?
- No agents, no heavy footprint. Can it read the tenant through APIs without installing agents or a cloud service?
Where Siemserva fits
Siemserva is the dedicated posture and remediation layer. Run native Secure Score for Microsoft's baseline and ScubaGear or Maester for transparent pass/fail checks, then let Siemserva rank what matters, map it to compliance, and hand you the validated fix across 650+ checks. It runs on Windows and Mac, reads the tenant through Microsoft Graph and related APIs with no agents and no cloud service, and AI is optional and bring-your-own-model via MCP, working with Claude or any AI.
Want to see it before you scan your own tenant? There is a free Advanced Microsoft 365 Security Simulator with no access to your tenant. See it in context on the Microsoft 365 security check page, or review compliance and frameworks.
Get a keyFrequently asked
What is the best Microsoft 365 audit tool?
There is no single best tool for everyone. Native Microsoft tooling gives a baseline, open-source tools like ScubaGear and Maester give transparent pass/fail checks, and dedicated posture tools like Siemserva add ranked findings, compliance mapping, and validated remediation. Choose based on coverage breadth, whether you need fixes and not just findings, and whether you manage multiple tenants.
Are free Microsoft 365 audit tools good enough?
Free and open-source tools such as CISA ScubaGear and Maester are useful and transparent, but they typically produce raw pass/fail output without ranked prioritization or validated remediation. They are a strong starting point and pair well with a dedicated posture tool that adds prioritization, compliance mapping, and fixes.
Does an audit tool need to cover more than Entra ID?
Yes. A thorough audit should cover identity in Entra ID plus Intune device management, Exchange and email security, SharePoint, OneDrive, Teams, and Purview. Siemserva runs 650+ checks across the full Microsoft 365, Intune, Entra ID, and Purview stack.
Do I need to install an agent?
Siemserva needs no agents and no cloud service. It runs on Windows or Mac and reads your tenant through Microsoft Graph and related APIs. You can also try a free Advanced Microsoft 365 Security Simulator with no access to your tenant.