Microsoft is ending mainstream support for Dynamics AX 2012 in October 2021: click to view
“Mainstream support for Dynamics AX 2009 Service Pack 1 (SP1), Dynamics AX 2012, and Dynamics AX 2012 R2 ends on October 9, 2018. After that date, only security hotfixes will continue to be provided for these three versions through the extended support period that continues until October 12, 2021. For more information, see support.microsoft.com.
Mainstream support for Dynamics AX 2012 R3 continues through October 12, 2021. Microsoft will continue making security hotfixes, non-security hotfixes, and regulatory updates for Dynamics AX 2012 R3 throughout that mainstream support period. The source code for these non-binary, non-security hotfixes and regulatory updates will continue to be available for customers, and their partners, active on the Enhancement Plan or Software Assurance.”
Microsoft partners will obviously still be able to offer managed services for Dynamics AX and Microsoft will offer additional paid support. But, as you might expect, there’s been a push for some years for organisations to upgrade from on-premise based Dynamics AX to Dynamics 365, the cloud based solution.
Although D365 was initially intended to be cloud-only, multiple means of deployment were offered when Microsoft realised that demand for locally hosted software was still high. So is on-premise vs cloud a non-issue now?
Comprehensive analysis from Nigel Frank:
https://www.nigelfrank.com/blog/cloud-or-on-premise-a-dynamics-365-deployment-faq/