Since the 4.2.0 version just Just the same views for linked issues (Hierarchical tree, Matrix and MatrixPivot Dependency Table) can be added to Jira Dashboards and Confluence pages via these gadgets:
Links Pivot Table View (since version 6.0.0), renamed to "Links Dependency Table View" (since version 7.0.0)
Links Hierarchy View gadgetAnchor Hierarchy-View Hierarchy-View 
Links Matrix View gadget (Server/DC) or Links Traceability Matrix (Cloud) Anchor Matrix Matrix
Simply provide the Issue key for the root element in the hierarchy:
| Info |
|---|
For Jira Cloud Available for Jira Cloud from version (7.1.1) |
You can set editable or non-editable mode. In non-editable mode you can collapse depth levels, export to excel and view in dependency matrix or in issue navigator (“More” menu).
Links Matrix View gadget (Server/DC) or Links Traceability Matrix (Cloud) | Child pages (Children Display) |
|---|