No, you don’t need to update the link every time you publish.
When you publish changes in Copilot Studio, the bot is updated in place, so your existing Teams chat app automatically uses the latest version.
When would you need a new link?
Only if you:
Create a new bot
Publish to a different environment
Or repackage/reinstall the Teams app
For normal updates, just publish, no need to resend or change the Teams link.
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