What Is Privileged Identity Management (PIM)? A Plain-English Guide

Short answer: privileged identity management (PIM) is how a business governs who holds elevated roles and for how long. Instead of permanent admin rights, people are made eligible for roles they activate just in time — behind multi-factor authentication and, for sensitive roles, an approval — for a time-boxed window that expires on its own. Every activation is logged, and scheduled access reviews re-check who should stay eligible.

If privileged access management (PAM) is the vault and the guard, PIM is the approval system in front of them. This guide explains the problem PIM solves, how just-in-time activation actually works, what Microsoft Entra PIM covers and requires, and how to roll it out without locking yourself out of your own tenant.

What problem does PIM solve?

The standing admin. In most small businesses, the list of who holds admin rights wasn't designed — it accumulated: the owner, whoever set up the tenant, an IT vendor from two contracts ago, and a few people who needed elevated access once for a project that ended. Each of those accounts holds its power around the clock, for work that needs it maybe an hour a week.

That gap between rights held and rights used is pure attack surface. A phished standing admin hands over the tenant at 3 a.m. on a Sunday; a phished eligible admin hands over a mailbox, because the elevated role wasn't active. PIM's whole job is collapsing that gap — the same people can still do the same admin work, but the rights only exist while the work is happening. It's the principle of least privilege applied to time, not just scope, and it's the reason "clean up admin accounts" sits near the top of our Microsoft 365 security checklist.

How does just-in-time activation work?

A PIM activation is a fast, recorded ritual that replaces a permanent state:

• Request. An eligible admin selects the role they need and states a business reason. Under a minute.
• Gate. MFA verifies the person. The most sensitive roles — Global Administrator, above all — can also require a second person's approval before the role activates.
• Window. The role is active for a configured period: an hour for a routine change, a shift for a migration weekend.
• Expiry. When the window closes, the role removes itself. No cleanup ticket, no forgotten admin.
• Record. The activation — who, which role, when, why — lands in the audit log.

The result is that "who is an admin right now?" becomes a question with a short, current, provable answer — usually "nobody, and here's who can be."

What are eligible and active role assignments?

These two words carry most of PIM's design. An active assignment is the traditional standing admin: the person holds the role continuously. An eligible assignment means the person is pre-approved to take the role but doesn't currently have it — they activate it when needed, through the ritual above.

Converting active assignments to eligible ones is the core move of a PIM rollout. Nothing changes about who is allowed to administer things; what collapses is the standing exposure. Assignments can also be time-bound at a second level — eligibility itself can expire, so a contractor's ability to elevate ends with the contract instead of outliving it.

What is the difference between PIM and PAM?

They secure the same accounts from two different angles, and the cleanest way to hold the distinction is by the question each one asks. PIM asks: should this user have this elevated role right now? It focuses on who gets elevated access, grants temporary time-bound roles, and manages the identity lifecycle around them. PAM asks: what is this account doing with its access, and is it secure? It focuses on how access is used during an active session — credential vaulting, automatic password rotation, and session monitoring.

They're complementary rather than competing: PIM without PAM leaves service-account passwords unrotated and sessions unwatched, while PAM without PIM lets standing role assignments quietly accumulate. Most environments end up needing both, sequenced by licensing and risk — our PIM vs PAM comparison walks through that decision side by side.

What is Microsoft Entra PIM?

Microsoft Entra Privileged Identity Management is Microsoft's PIM implementation for Entra ID and Microsoft 365 admin roles, and for most small and mid-sized businesses it's the practical way to get PIM: eligible assignments, just-in-time activation with MFA and approvals, time-bound windows, access reviews, and a full audit trail — all inside the tenant you already run.

The catch is licensing. Entra PIM requires Microsoft Entra ID P2, per Microsoft's documentation. P2 is included in enterprise plans like Microsoft 365 E5 (and in the Entra ID Governance add-on), but not in Microsoft 365 Business Premium or E3, which ship the P1 tier — the one that covers Conditional Access. So the first PIM question isn't technical at all: it's whether your plan already includes P2, and whether stepping up for your admins is worth it. Checking what a tenant actually holds is part of our Microsoft 365 management work, and the honest answer is sometimes "you already own this — it's just not turned on."

What are access reviews?

The slow-motion half of PIM. Just-in-time activation governs the moment; access reviews govern the quarter. On a schedule, someone accountable re-confirms each eligible assignment: does this person still need to be able to become an Exchange admin? A review that lapses or a reviewer who says no removes the assignment automatically — so eligibility is re-earned rather than grandfathered.

Reviews are also where PIM quietly pays for itself with auditors and insurers. "Show me who can administer the tenant, and prove someone checked recently" is a standard ask on security questionnaires — with reviews running, the answer is an export instead of an archaeology project.

Do small businesses need PIM?

The test is the same one we apply to PAM: if one phished admin credential could reach your files, backups, and security tooling, the standing-admin problem is your problem — a 15-person firm's tenant falls over just as completely as an enterprise's. What changes at small scale is the path: fewer roles, fewer people, and often licensing that decides the timing. If your plan already includes Entra ID P2, PIM is one of the highest-impact controls you've already paid for. If it doesn't, the spirit of PIM still applies today at zero cost — separate admin accounts from daily-use ones, strip the admin list to what's genuinely needed, and time-bound any vendor's access by hand until tooling takes over.

How do you roll out PIM without locking yourself out?

The failure mode isn't subtle: convert every assignment at once, misconfigure an approval, and discover at the worst moment that nobody can activate anything. The order that works:

• Break-glass first. Two cloud-only emergency access accounts, stored offline, deliberately excluded from PIM and Conditional Access — Microsoft's own recommendation. Governance should never be the reason you can't enter your own tenant during an incident.
• Inventory the roles. List every current admin-role holder and remove the stale ones before converting anyone. This alone usually shrinks the list by a third.
• Pilot on the noisiest roles. Convert the roles people use daily first, tune the activation windows with the team, then expand outward.
• Add approvals selectively. Approval gates belong on Global Administrator and a handful of sensitive roles — not on everything, or the gate becomes a rubber stamp.
• Schedule the reviews. Quarterly is a sensible default; tie removals to the review so the process enforces itself.

Frequently asked questions

Is PIM only for Microsoft environments?

No — PIM is a discipline, not a product. Microsoft Entra PIM is the best-known implementation and the natural fit for Microsoft 365 shops, but the pattern — eligible roles, just-in-time activation, expiring assignments, scheduled reviews — appears across identity platforms, and the vaulting side of the house is covered by PAM tooling regardless of vendor. If your business runs on Microsoft 365, though, Entra PIM is almost certainly where you'd start.

How long should an activation window be?

As short as the work, and no shorter than your team's patience. Routine administration does fine on one-to-four-hour windows; project work gets a shift; anything longer deserves a question. The tuning matters more than the number — a window so short that people activate five times a day breeds resentment, and resentment breeds workarounds. Pilot, measure, adjust.

What does PIM cost?

Two parts: licensing and engineering. Licensing is Microsoft's price list — Entra ID P2, on its own or inside plans like Microsoft 365 E5; if your plan already includes it, this part is zero. Engineering is the design and operation: role mapping, windows, approvals, break-glass, reviews. NetSys scopes that to your tenant and folds it into a month-to-month agreement rather than quoting off a rate card — a short conversation about your admin list gets you a real number.

Key takeaways

• PIM governs who holds elevated roles and for how long — the approval system for admin rights.
• The core move: standing (active) admin assignments become eligible ones, activated just in time behind MFA, expiring on a timer.
• PIM asks "should this person hold this role right now?"; PAM asks "what is this account doing with its access?" — most environments need both.
• Microsoft Entra PIM requires Entra ID P2 — included in Microsoft 365 E5, not in Business Premium or E3.
• Roll out in order: break-glass accounts, role inventory, pilot the noisy roles, selective approvals, scheduled reviews.

The NetSys Group deploys and runs privileged identity management alongside privileged access management as one program — designed by the engineers who already manage your tenant, evidence-ready for carriers and auditors, and month to month like every NetSys agreement since 1998. Not sure which side you're missing? Start with the PIM vs PAM comparison, or let a security assessment show you where your admin access stands today.