SharePoint folders are not a CMMC compliance platform
SharePoint is great for many things. Compliance tracking isn't one of them.
Most contractors that don't use Excel for CMMC end up using SharePoint instead. A folder per control family, Word docs for policies, screenshots for evidence, an SSP doc in a subfolder. It feels organized, until the C3PAO arrives and asks "show me the audit trail of who uploaded which evidence when, for which control." SharePoint's permission model wasn't designed to answer that question.
Five places SharePoint compliance tracking breaks
Each one is a real audit finding pattern.
No control-to-evidence linkage
A folder called "AC - Access Control" holds 30 files. Which file proves §3.1.5 (least privilege) vs §3.1.20 (CUI access)? SharePoint can't answer; you re-check at audit time. Linkage is in someone's head, not the system.
Permission drift over months
SharePoint permissions inherit, override, and drift across folders. The C3PAO walks you, you discover a folder where everyone in the org has read access including PII-adjacent evidence. Audit finding on §3.1.1 (account management).
No SPRS calculation, ever
SPRS scoring requires per-control weight applied in real time. SharePoint has nothing for this. You compute SPRS manually in a separate spreadsheet, which itself fails per the Excel issues.
POA&M lives in a separate Word doc
No linkage between the POA&M Word doc and the control folder structure. POA&M item #15 references "evidence in Q3 folder": the assessor opens Q3, the file is gone or renamed. Audit fails on traceability.
No C3PAO scoped read-only access
When the C3PAO arrives, you grant them a SharePoint guest account. They see EVERYTHING in scope folders, including drafts, deletions, and earlier-version comments by your team. No audit log of what they viewed.
What changes when you move CMMC tracking out of SharePoint
Three concrete outcomes contractors report after migrating.
Every file linked to a control
When you upload evidence in Readyline, you pick which control(s) it satisfies. The assessor opens a control; sees ONLY the evidence linked to that control. No folder hunting, no judgment calls.
Permission model that matches CMMC roles
Admin / Contributor / Viewer / C3PAO Assessor roles built into the platform. No SharePoint permission drift. C3PAO gets a scoped + time-limited access tier specifically for assessment.
Audit trail of every action
Who uploaded what evidence, when, against which control, with which approval. Who viewed it. Who changed implementation status. Every action logged per tenant, supporting your §3.3.1-3.3.5 evidence.
SharePoint-to-Readyline questions
What contractors ask when they finally move off SharePoint folders.

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