The new feature of the service-registry provides Jira Service Desk with ability to create, tier and assign Services those Services however just live in Jira Service Desk and can hardly be accessed or integrated in any other tool or plattform.

The only (experimental) API Request I found for it hints, that this feature is not fully developed.

However if the service-registry was able to be exported via API or UI we could start to use it for our service portfolio.

Resources:

https://support.atlassian.com/jira-service-management-cloud/docs/what-is-services/

https://developer.atlassian.com/cloud/jira/platform/rest/v3/api-group-other-operations/#api-rest-atlassian-connect-1-service-registry-get