Link unfurling allows you to enter a Stack Overflow for Teams URL in Slack, and see an actionable preview of the content in the channel.
Pasting a link into a channel or direct message will automatically unfurl the link and show you a preview of the content.
From the preview of a question, you can click on the buttons to answer, comment, notify others, or view the accepted answers. The actions will open up the relevant Teams page in your web browser.
Previews will also be shown for Articles, Answers, Comments, and other content.