Rewrite Intro to Teams docs

docs/teams/intro_to_teams.md

@@ -1,5 +1,18 @@
 # Intro to Livebook Teams
 
-[Livebook Teams](https://livebook.dev/teams/?ref=docs) enables you to deploy internal tools built with Elixir and Livebook to your own infrastructure.
+[Livebook Teams](https://livebook.dev/teams/?ref=docs) enables you to deploy Livebook apps to your own infrastructure.
 
-It's currently in free beta. You can [join the beta waiting list here](https://livebook.dev/teams/?ref=docs) to get early access.
+<iframe width="560" height="315" src="https://www.youtube-nocookie.com/embed/lwLx5beXxsg?si=husANqYhTc3rXAZS" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
+
+Besides deployment automation, it also offers the following features:
+
+- Authentication via multiple identity providers:
+	- Livebook Teams
+	- [Email-domain (Google, Microsoft, etc)](email_domain.md)
+	- [OIDC (Okta, Microsoft Entra, etc)](oidc_sso.md)
+- Authorization
+	- based on groups from an OIDC identity provider
+- [Shared Livebook secrets](shared_secrets.md)
+- [Shared Livebook file storages](shared_file_storages.md)
+
+You can [star a free trial here](https://livebook.dev/teams/?ref=docs).