An Azure service that is used to provision Windows and Linux virtual machines.
@Rising Flight , You can share images across subscriptions using Role Based Access Control (RBAC). Any user that has read permissions to an image version, even across subscriptions, will be able to deploy a Virtual Machine using the image version.
Here is doc that helps you to store and share images across subscriptions
Share Gallery resource across tenants: https://learn.microsoft.com/en-us/azure/virtual-machines/share-gallery?tabs=portal
Note: But there is no possibility to either move or replicate the image and its versions across subscriptions.
----------
Please do not forget to "Accept the answer" wherever the information provided helps you to help others in the community.