The Dynamics 365 Licensing Guide has moved to a new edition. Microsoft's own PDF metadata timestamps this file's creation at September 30, 2026, and both the cover page and the "What's new in this licensing guide?" box on page 2 read October 2026, which is the label we will use. The guide jumped from 90 pages to 95. That five-page growth is itself a signal: a whole new product section was inserted at pages 59 to 62, with the content after it reflowing to fill out the rest. We check this edition over edition the same way every time, by comparing Appendix K's Change Log, now on page 94, against the prior edition we archived. This time it logs exactly one new entry dated October 2026.
The one new entry: Dynamics 365 Sustainability joins the portfolio
The single October change, straight from the Change Log:
| Pages | Product | Change | Dated |
|---|---|---|---|
| 59 to 62 | Sustainability | New. Dynamics 365 Sustainability, new to the Dynamics 365 portfolio | October 2026 |
Dynamics 365 Sustainability is, in Microsoft's words, an extensible software-as-a-service solution that helps an organization record, report, and reduce its environmental impact through automated data connections and actionable insights. It ships in two plans, Essentials and Premium, and it comes with a Sustainability Insights Agent in Copilot Studio that analyzes sustainability goals and progress and supports year-over-year and peer comparisons.
The licensing shape is the part worth noting. Sustainability is licensed with a tenant license plus a user subscription license, and the guide is explicit that a Dynamics 365 Sustainability Essentials USL is required for each user in the tenant. Essentials lists at $4,000 per tenant per month, before the per-user licenses, with Premium above that. The feature set is pure environmental, social, and governance work: Scope 1, 2, and 3 emissions calculations, water accounting, waste tracking, carbon factor libraries, and Power BI dashboards. Power Apps and Power Automate use rights are bundled, but only for use inside Sustainability Manager.
Why this one does not touch your F&SC bill
Last month's new entry, Headless Commerce, was worth reading for a Finance and Supply Chain shop because it was documented to integrate directly with Finance and Supply Chain Management. This one is the opposite case, and that is the useful finding.
Dynamics 365 Sustainability is a standalone product with its own tenant license and its own per-user USL. The October guide's Sustainability pages do not mention Finance, Supply Chain Management, procurement, or operations, and they describe no integration with the Finance and Operations apps. In practical terms that means it introduces no new Finance and Supply Chain entry point, privilege, or securable. It does not roll up into the per-user license requirement that drives your Finance and Supply Chain seats, and it will not appear anywhere in a Finance and Supply Chain role, duty, or privilege analysis. If you run Finance and Supply Chain, your license count and your security configuration are unchanged by this edition.
There is one honest caveat on the concept rather than the licensing. Sustainability reporting, and Scope 3 emissions in particular, draws on real-world supply chain and procurement activity, so the data a Sustainability deployment consumes may well originate in the same operations your Finance and Supply Chain estate runs. That is a data-integration conversation for a future project, not a licensing change today. As the guide describes it in this edition, Sustainability is licensed and operated entirely on its own.
Month over month
Two editions in a row have logged a single new entry each, and they land on opposite sides of the line that matters for this audience. September added Headless Commerce, which reaches into Finance and Supply Chain. October adds Sustainability, which does not. For a Finance and Supply Chain owner, the September edition was one to read closely and the October edition is one to note and move on from. Everything else in the Change Log, from the Customer Insights agents through the Sales and Business Central updates, predates this edition and was covered in earlier Guide Watch entries. Nothing in October changes an existing Finance and Supply Chain entitlement.
If you read one line: the October 2026 guide adds exactly one product, Dynamics 365 Sustainability. It is a standalone software-as-a-service solution with its own tenant license and a per-user USL, priced and operated separately. If you run Finance and Supply Chain, nothing about your license count or your security configuration changes this month.