Architecture
Appsvio Test Management (ATM) is built on Atlassian Forge. Forge is Atlassian’s platform for cloud apps, and Forge apps run on Atlassian infrastructure.
ATM stores all its data, including attachments, on the Atlassian side. ATM data never leaves Atlassian.
Jira and the Atlassian cloud


Requirements, Test Cases, Test Plans, Test Campaigns, Test Executions, and Defects are Jira work items. Test Case Executions are ATM’s own objects. ATM keeps them, together with attachments, on the Atlassian side too.
For details on where ATM data is stored, see Data Residency. For details on why no data leaves Atlassian, see No data egress.