Got initial response on this from @Mark Segall about Plans and Adv Roadmaps.
Correct Plans and Advanced Roadmaps are one and the same.
When you create a new issue type that is expected to reside above the Epic in the issue type hierarchy such as Initiative, you have a choice in how you want to employ it. Factors to think about as to whether Initiatives should reside with their child issues or centralized in their own project:
If the answer is "Yes" to either of these questions, it makes sense to use a central repository for managing the Initiatives. From there, you would just need to be sure that you're adding that project to your Plan's issue source.
@Mark Segall We have multiple Modules or Independent components being developed. So per JIRA limitation we are thinking to have Epic -> Story -> Task hierarchy in each project which is per module / component we are building. At org level / bigger product theme - we would like to map multiple EPICS from multiple projects to Initiative at the top - platform / Org level.
In such case where should we keep the initiatives?
create a new project and add just initiatives in it or is there a JIRA space/repository at top, above projects where we can keep adding initiatives and link Epics from projects to Initiative?
@Walter Buggenhout @Mark Segall I tried creating a separate project - its a team managed project. Added an Issue type there as Initiative and added few Initiatives. Then i have different other projects from where need to Link EPICs to these Initiatives in a separate project. In this case will i be able to add the initiative as a parent to the other Epics in other projects ? or have to use linking ? Trying based on the below link to use parent relationship from Epic to Initiative. somehow unable to find the options mentioned in below guidance. Where to set the initiative - Epic hierarchy ? in dedicated initiative project or the other projects holding Epics ? or at global template level in JIRA ? We have the premium license at the moment.
Configuring initiatives and other hierarchy levels | Atlassian Support | Atlassian Documentation