Partners and guests
Distinguish recurring collaborators from one-time recipients and clarify who sponsors each guest relationship.
Independent Microsoft 365 review
Know where collaboration ends and external access begins.
For organizations that need partners and guests to work effectively while keeping sharing paths, ownership and removal decisions understandable.
- Before any access
- Written question and scope
- Agreed evidence method
- No automatic tenant changes
Define the collaboration boundary first.
External sharing is a business capability, not a switch that is simply good or bad. A review begins with who must collaborate, what information is involved and how long access should remain useful.
Workload boundaries
Teams, SharePoint, OneDrive and Microsoft 365 groups expose different controls and user experiences that must be considered together.
Information sensitivity
Match the review depth to the information and decisions in scope without implying a complete data-governance assessment.
Follow the path from tenant setting to shared item.
Tenant-wide allowances, site settings, team ownership and individual sharing actions can combine in ways that are difficult to infer from one screen.
Tenant and workload policy
Establish the broadest permitted behaviour and where administrators intentionally narrow it.
Site and team ownership
Identify who can invite, approve, review or remove access, and whether that responsibility is understood outside IT.
Links and direct access
Compare anonymous, organization-wide, guest and named-person sharing paths where they are available and relevant.
Make lifecycle responsibilities explicit.
The central question is not only who can be added. It is who notices when the relationship, project or information need has ended.
Invitation
Document who may invite and what context or approval should exist before access begins.
Review
Define a practical owner and cadence for checking guests, shared sites and exceptions rather than assuming they will self-correct.
Removal
Connect project closure, employment changes and partner offboarding to the places external access persists.
Turn findings into usable sharing decisions.
A useful output distinguishes an unintended opening from a deliberate collaboration choice that needs clearer ownership or monitoring.
Narrow a path
Where the current allowance exceeds the business need, identify the affected users and rollout consequences before tightening it.
Keep with conditions
A valid external path may remain while sponsorship, expiration, review or information handling becomes more explicit.
Investigate ownership
Where no one can explain a site, guest population or exception, assign discovery before prescribing a technical change.
Next step
Define the review before sharing evidence.
Start with the trigger, decision, and known boundaries. Do not send passwords, recovery codes, or tenant exports.