SL tiers, pricing, overbuying patterns, and license validation.
The belief that nothing can be done about a D365 license bill is the most expensive one in the room. Microsoft sets the price and the rules. How many licenses you actually need is a function of your own security configuration, and that is yours to change.
The October 2026 Dynamics 365 Licensing Guide adds exactly one new product, Dynamics 365 Sustainability, a standalone SaaS with its own tenant and per-user licensing. For a Finance and Supply Chain shop, nothing changes.
Grant/deny conflicts, mixed-tier privileges, sysadmin-plus-business-role overlaps: none of it needs usage evidence to catch. Here's why the lightest check we run is worth running after every security change during remediation, not just once at the end.
A modeled saving of $171,552 looked real until you asked how much hits the next invoice. The answer was near zero until revocation ships. The one question to ask of any quote.
A client chose to deliver their security redesign in batches, a completely reasonable call for a business that can't pause. Here's what that decision actually costs on our side, batch after batch, and why it isn't anyone's fault.
Restoring missing usage data raised the modeled cost from $1.83M to $2.21M. The honest number went up, not down. Why more evidence can make a design look worse, and why that is right.
A saving you cannot bank until the package actually ships it. On one estate the designed cost sat 61.5% below the shipped cost, and the shipped saving was zero.
Cost came first, then it came third, out of a legitimate concern about revoking access without proof of use. Remediation exists to cut a real bill, so we adapted our strategy to keep finding savings compatible with the new order.
Modeling a client's per-role license intent and the process change behind it: find the driver, re-route to a cheaper entry point or drop it, then confirm the tier actually fell.
'We don't run Commerce, take it off our bill' is surgery, not a toggle. The pros, the cons, the ties and service operations that trip it up, and governing intent so drift cannot undo it.
Some organizations want the leanest defensible design. Others want to change nothing that isn't costing them money. We built a dial for it, and caught a real mistake in our own modeling before shipping it.
Pricing a bug correctly nearly removed access hundreds of users needed. Why an evidence-based engine must credit service-operation cost without letting it condemn a privilege.
The same project case needs a premium Project Operations license through one door and only Team Members through another. The license is a property of the door, not the destination.
Most tuning decisions turned out not to matter at all. One did, tested across two structurally different clients, and it behaves in opposite directions depending on the client's shape.
D365 charges real licenses for service operations, the endpoints integrations call. Most license tooling prices them as free, so a whole category of paid access is invisible.
Our evidence model leans on telemetry and audit-log evidence together. This environment had almost no usable telemetry at all. Here's what the redesign looked like on one evidence source instead of two.
Pricing the 'before' seat from the union of every license option a user could reach invents savings that were never there. Price one population, both sides, as a minimum-cost cover.
Our cheapest role-mining design still produced 760 roles. The client asked for as few roles as possible, and told us upfront they'd pay more for it.
A vs-compliance baseline and a like-for-like baseline answer different questions and produce very different savings. Mixing them inflates the headline. Name your baseline.
A client rejected a 100-role fix and asked us to mine roles from real usage instead. Our first attempt would have cost more per month than doing nothing.
On one estate, five privileges pinned 110 of 127 top-tier seats. License cost is Pareto-distributed, so targeted remediation beats a boil-the-ocean role project.
Only about a quarter of D365 menu items cost less read-only, and a handful of privileges drive most expensive seats. Why 'just make it read-only' rarely lowers the bill.
On one estate the user list held about 2,180 accounts but barely 955 were real people. Counting service and system accounts as seats inflates both the bill and the savings claim.
Roughly half of all menu-item privileges can't be directly observed by any audit trail. Here's the careful, layered process for closing part of that gap.
D365 bills per user over the union of their roles, resolved as a minimum-cost set cover. Pricing per role double-counts and invents savings. The conceptual spine of license analysis.
A disposition table says what to keep, downgrade, or drop. It doesn't say what roles to build. Here's the separate step, and the trade-off it can't avoid.
The September 2026 guide's only new entry is Headless Commerce reaching GA. Unlike the last two editions, this one is documented to integrate directly with Finance and Supply Chain Management.
Microsoft bills per user, not per role, over everything their roles can do. A plain-English primer on D365 F&SC license tiers and the vocabulary every analysis assumes.
Most reviews start with a user list and a role count, about ten questions. A properly scoped intake runs to 106. Here's what falls in the gap.
A privilege with no recorded activity isn't automatically safe to remove. Why observability has to be verified before silence can be treated as an answer.
Every privilege in a D365 role lands on one of five outcomes. Here's the evidence model behind that decision, and the one rule that keeps it safe to act on.
Every article on this site traces back to the same three-stage method. This piece is the map, linking to the articles that go deep on each stage.
The security model wasn't the biggest driver of this estate's license bill. The way one integration authenticated was.
Instead of two hours of manual UI exports, get just-in-time database access to a Tier 2 sandbox and run one script that pulls all 33 datasets, license, security, personalization, and audit-log evidence, unattended.
Four published engagements with real before-and-after numbers, including the one where our own recommendation got turned down, and why we publish that one too.
Ten datasets, each answering one specific question, joined together into a single defensible license number.
The August 2026 Dynamics 365 Licensing Guide grew from 89 to 90 pages. Two new Change Log entries, both Customer Insights agents, neither touches Finance or Supply Chain Management.
A working list of the device, integration, and background-operation roles that carry no license requirement on their own.
Telemetry is one of the strongest inputs in a license review, and also one of the easiest to misuse.
Microsoft's per-user validation is tied to each tenant's own renewal date. What actually needs to happen before that date, not after the notice arrives.
A role name rarely tells you why it's expensive. The entry points inside it do.
Most licensing reviews start with a user export and a few disabled accounts. That feels productive and rarely gives you a trustworthy number.
Clients assume Microsoft-delivered roles are untouched and safe to trust. Five real patterns show how a quietly customized role drives cost.
License requirements aren't decided at the role level. They're decided at the user level, across every role that user holds.
Negotiating a Microsoft discount lowers price per license. It doesn't touch how many you actually need. Two real engagements show what the second lever is worth.
A privilege tied to five expensive workloads doesn't need the priciest one. It needs whatever license every entry point actually shares.
Our first fully automated D365 F&SC security migration: an XML import replaced weeks of manual role-building. What that automation actually required, and the framework we had to build around it.
The mathematically optimal security model saved $32,000 a month. The client rejected it as unmaintainable, and was right to. Why, and how we rebuilt our methodology because of it.
A European estate with genuinely well-built security still carried $40,000 a month in avoidable license cost. What a clean configuration hides, and how we found it anyway.
A four-export, two-formula method for finding exactly which permissions drive each license on a role that requires three or more, plus a free downloadable workbook.
The exact Azure and F&SC configuration steps, what it costs against the free tier, and the two KQL scripts that turn telemetry into a license and user-activity report.
Identifying inactive users saves the most of any overlicensing strategy, but the built-in report alone misreads integration users. The two-source method and two exceptions that keep it accurate.
Contradictory Deny/Grant on the same entry point, and Correct or Invoke permissions granted without their prerequisites. Both pass an access review clean and still inflate license tiers.
A plain-English breakdown of Dynamics 365 Finance & Supply Chain license types (Team Members, Operations, Premium) and the five overbuying mistakes we see most often.
Starting on each tenant's contract anniversary or renewal date after January 15, 2026, Microsoft will block unlicensed users from D365 Finance and Operations apps. Here's the timeline and how to prepare.
No new agents, no pricing changes, no Change Log entries. The July 2026 guide is a copyediting pass, with one real change: Copilot Credits documentation consolidated into a standalone guide.
The June 2026 guide grew from 72 to 89 pages. Here's why: Microsoft added per-application pricing tables directly into the guide for the first time.
A page-by-page comparison of the April 2026 and May 2026 editions of the Dynamics 365 Licensing Guide.
