Forum Discussion
A Quick Look at Purview Data Security Investigations
During the quiet holiday period, I tested the new Purview Data Security Investigations (DSI) solution, which seems to be put together from bits of Microsoft 365 together with Security Copilot and som...
I agree that the “cost per investigation” angle can be a bit misleading if you compare DSI to other Microsoft-internal features 1:1.
DSI feels much closer to the investigation / review platform space (Relativity, Nuix, etc.) than to “just another M365 capability.” And in that world, competitors often charge ongoing monthly fees plus storage/processing for as long as the matter runs — which can easily end up multiples higher than a consumption-based run in DSI.
The real takeaway for me isn’t “DSI is expensive,” but: pay-as-you-go needs guardrails (budgets, alerts, scoped investigations, clear runbooks) and ideally a realistic PoC with representative data volumes. Without that, even small tests can look surprisingly costly.