Teams Wikis are rapidly approaching the point where they become unsupported. Microsoft has a migration utility to move wiki content to OneNote. This article covers how the migration works and what happens after Teams wiki content moves to OneNote.
Microsoft plans to replace the Teams wiki with OneNote and will release a migration app to move content from wiki to OneNote. That’s great, but you need to know what channels include the wiki tab before you can decide what material should be migrated. This article explains how to use PowerShell to create a report of Teams channel tabs for wikis.
A simple question asked where Teams stores its Wiki content. A search found that the Wiki is stored in a SharePoint document library, while some further investigation discovered some interesting facts about the Teams wiki.