Dynamics AX 2009 / 2012
Dynamics 365 Finance & Operations
01Assessment
A full inventory of the customizations, integrations and data volume in your current AX environment.
Dynamics AX to Dynamics 365 Finance & OperationsLeaving AX 2009 or 2012 doesn't mean starting over
AX 2009 and 2012 are out of Microsoft support. We carry your customizations, data and business logic onto current Dynamics 365 Finance & Operations, keeping what works and modernizing what doesn't.
- Customizations re-platformed
- Parallel validation
- Planned cutover & rollback
Why move now
From running on borrowed time to current, supported and connected
Every year on AX adds risk and cost. Here's what changes when you move.
Where you are
AX 2009 / 2012
- Out of Microsoft support, with no security fixes since 2022–2023
- On-premise infrastructure to maintain
- Customizations only your original team understands
- No native Power BI or Power Platform connectivity
- A shrinking pool of AX-skilled consultants
Where you're headed
Dynamics 365 F&O
- Continuous updates from Microsoft, no more version lock-in
- Cloud-hosted, with predictable infrastructure costs
- Customizations re-platformed as supportable extensions
- Native Power BI, Power Automate and Power Apps integration
- A growing, current talent pool to support you long-term
Side by side
What actually changes in day-to-day operations
| Area | AX 2009 / 2012 | Dynamics 365 F&O |
|---|---|---|
| Hosting | On-premise servers you maintain | Microsoft-managed cloud infrastructure |
| Updates | Manual, high-risk version upgrades | Continuous updates, tested before rollout |
| Reporting | Custom SSRS reports, limited self-service | Native Power BI embedded reporting |
| Customizations | Deep code-level modifications | Extensions that survive future updates |
| Mobile access | Little to none | Native mobile workspace apps |
| Support talent | Shrinking, increasingly expensive | Broad, current Microsoft partner ecosystem |
Upgrade paths
AX 2012 and AX 2009 take different routes to Dynamics 365
Microsoft provides an upgrade for AX 2012 R2 and R3, and a data migration for AX 2009. Which one applies to you shapes the whole project.
| Area | AX 2012 R2 / R3 | AX 2009 |
|---|---|---|
| Microsoft support | Ended: AX 2012 R2 on April 12, 2022; R3 on January 10, 2023 | Ended April 12, 2022 (AX 2009 SP1) |
| Microsoft's route | Upgrade: code upgrade and data upgrade tools, run through Lifecycle Services | Migration: the AX 2009 Data migration tool is the only supported path |
| Your data | The AX 2012 database is upgraded, so history comes across | Tables are mapped to Dynamics 365 data entities and moved by legal entity; you choose how much history to bring |
| Your customizations | Custom code is brought forward and reworked as extensions, or replaced by standard features | Code does not carry across; what you still need is rebuilt as extensions |
| Older releases | AX 2012 RTM is first brought to a supported release before upgrading | AX 2009 RTM and earlier versions are assessed case by case |
Source: Microsoft Learn, end of support for Dynamics AX 2009 and 2012.
Migration path
Four stages, planned around your live operations
Your AX system keeps running until the day you switch, and you choose that day.
- 01Assessment
- 02Re-platform plan
- 03Migrate & validate
- 04Cutover
02Re-platform plan
Each customization is mapped to a native F&O feature, an extension or a Power Platform solution.
03Migrate & validate
Data and logic move across in parallel environments and are validated against your live AX system.
04Cutover
A scheduled cutover with a defined rollback window, so the switch happens on your terms.
What we watch for
The three things that derail most AX migrations
We plan for each of them from day one, so none of them turns into a go-live surprise.
-
01
Undocumented customizations
We reverse-engineer logic that was never written down, before it becomes a go-live surprise.
-
02
Data quality assumptions
Years of AX data often carry quiet inconsistencies. We validate before migration, not after.
-
03
Underestimated training needs
F&O is different enough from AX that we scope real training time, not a one-hour walkthrough.
FAQ
Questions about moving from Dynamics AX to Dynamics 365
Is Dynamics AX still supported by Microsoft?
No. Extended support ended on April 12, 2022 for AX 2009 SP1, AX 2012 and AX 2012 R2, and on January 10, 2023 for AX 2012 R3. Since then Microsoft has released no security fixes, hotfixes or regulatory updates for any AX version.
Can we keep our AX customizations?
The business logic, yes, where you still need it. Dynamics 365 Finance & Operations doesn't allow changes to Microsoft's own code, so customizations become extensions that survive Microsoft's updates. From AX 2012, custom code is brought forward and reworked; from AX 2009, it's rebuilt. Some older customizations are now covered by standard features, so the assessment sorts them into keep, replace and retire.
Do we keep our historical data?
From AX 2012 R2 or R3, the database is upgraded, so history comes with it. From AX 2009, you choose what to migrate: usually master data, open transactions and balances, plus as much history as you need. Older detail can stay in a read-only AX copy or a reporting database. How we reconcile migrated data.
Should we upgrade, or reimplement from scratch?
An upgrade keeps your data, setup and processes and gets you onto a supported system fastest. A reimplementation starts clean on standard Dynamics 365 and suits businesses whose processes have changed a lot since AX went live. Many projects land in between: upgrade first, then improve. The assessment gives you the trade-offs for your system before you decide.
How long does an AX to Dynamics 365 move take?
It depends mainly on how many customizations and integrations you have, your data volume and the number of legal entities. Your AX system keeps running until cutover, and the assessment gives you a realistic timeline and cost before you commit. Read our AX 2012 planning guide.
Do we need new licences?
Yes. Dynamics 365 Finance & Operations is licensed by subscription, per user per month, rather than the perpetual licences most AX customers bought. As a Microsoft Indirect Reseller (CSP) we size and supply them. See licence types.
Still on AX 2009 or 2012? Let's assess what moves and what doesn't.
A scoped assessment tells you the real cost and timeline, before you commit to anything.