Lifecycle gaps, SKU sprawl and shadow collaboration patterns that inflate Microsoft 365 cost—and how governance fixes both spend and risk.
Where the waste hides
- Stale accounts and departed contractors with active seats
- SKU mismatch (premium features nobody uses)
- Duplicate tooling when Teams overlaps with external chat stacks
- Guest sprawl without lifecycle review
Why it is also a security problem
Unused mailboxes, over-privileged guests and unmanaged devices increase exposure. FinOps and identity hygiene are the same workstream.
What good looks like
- Automated joiner/mover/leaver tied to HR signals
- Quarterly license analytics with business owners per application
- Conditional access baselines before expanding guest access
Bottom line
Treat Microsoft 365 like a production system: ownership, metrics and regular audits—not a one-time migration checkbox.
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