From what see in the product matrix, Identity Manager 14.4 would be supported on Windows 2019 standard edition.
Need to move to an operating system that has support as today windows server 2016 does not.
The Mainstream End Date is Jan 11, 2022 :
Need to know if have a roadmap for a newer version such as Jboss 7.3 or 7.4.
Release : 14.4
Customer checked with RedHat Supported and confirmed that Windows 2019 with EAP 7.2 is Supported by RedHat Support.
Broadcom Support also had a response from our Product Management who checked our Compatibility Matrix of Identity Manager 14.4 in the release notes and says that we don't specifically call out the Operating Systems dependency for Application Servers in our documentation.
We leave that up to the App Server vendor. In this case the responsibility with RedHat.