No, this is not Confluence but a tailor made landing page.
For tiny links with our own name like https://seibert.biz/usa we are using the open source software YOURLs, which I can highly recommend.
If you paste a Jira URI into a Confluence page (not a comment or micropost) it will automatically become an active link, if your Confluence and Jira instances are properly connected.
If you are in Jira, you cannot create such a bi-directional link. But you can manually link the Confluence page in the issue.
You are most likely aware, that we do offer professional services around these tasks.