Hi Amanda

Office 365 (O365) Groups are central to this.

If your organisation has restricted the creation of O365 Groups this will
prevent the proliferation of both Teams and Group-based SharePoint sites.
If not, every single Team that users create (in Microsoft Teams) will
create an O365 Group and a SharePoint site and information/records will be
much harder to manage. There are views either way here - we have controls
but we know other organisations don't.

To re-summarise your points, when you create a Team in MS Teams it:

   - Creates the Team in MS Teams. Chats in the Team are saved to the Group
   Outlook. (Note - The 'Microsoft Teams Chat Files' stored documents you have
   used in one-to-one chats, as opposed to documents in Teams-based
   conversations, which are linked to the Team's SharePoint site)
   - Creates an Office 365 Group that appears in Outlook and allows
   Yammer-like conversations between the Group members in Outlook
   - Creates a SharePoint site for the O365 Group (that can then be
   displayed in Teams)

All of the above is covered by retention policies that are set as label
policies in the Security and Compliance admin portal under
'Classifications', and using Data governance > Retention in the same
portal.

The article link below describes where these policies are applied (includes
Teams channel message and Teams chats):
https://urldefense.proofpoint.com/v2/url?u=https-3A__techcommunity.microsoft.com_t5_Microsoft-2DTeams-2DBlog_Retention-2Dpolicies-2Dfor-2DMicrosoft-2DTeams_ba-2Dp_178011&d=DwIBaQ&c=pZJPUDQ3SB9JplYbifm4nt2lEVG5pWx2KikqINpWlZM&r=b5NZPQUb9_r2rQ3Zd74ATT3aSs9yKyRnJLOhqJvd7fE&m=U2ZE1FmZ5JToXqEVuDjeSJHFBdH0PiiA00dIvLVrR3o&s=55PDWouZ4iKNUNaG0l4PywQpelF-2JJzMNPAF6lme6M&e=

You may also find this page useful:
https://urldefense.proofpoint.com/v2/url?u=https-3A__support.office.com_en-2Dus_article_overview-2Dof-2Dlabels-2Daf398293-2Dc69d-2D465e-2Da249-2Dd74561552d30&d=DwIBaQ&c=pZJPUDQ3SB9JplYbifm4nt2lEVG5pWx2KikqINpWlZM&r=b5NZPQUb9_r2rQ3Zd74ATT3aSs9yKyRnJLOhqJvd7fE&m=U2ZE1FmZ5JToXqEVuDjeSJHFBdH0PiiA00dIvLVrR3o&s=_Jlwr2KJgGtXX5yGo1VZjY9e0iwNtpXzX7mVnKIxEa0&e=

Regards
Andrew Warland
Sydney, Australia

On Tue, May 8, 2018 at 8:10 AM, Lemon, Amanda <[log in to unmask]> wrote:

> Has anyone ventured into retention and Office 365 Teams?
>
> Needing some guidance as it looks like when you create an Office 365 Teams
> site, you are:
>
>   *   Creating a Teams site, and
>   *   creating a SharePoint Online site (for files shared between the Team
> members), and
>   *   a "Microsoft Teams Chat Files" folder in your personal OneDrive site
> (for files shared in private chats), and
>   *   a "TeamChat" folder in your Exchange Online mailbox as well as your
> Office 365 Group mailbox for chat and channel messages
>
> Trying to understand the Teams retention policy and how this will or will
> not cover all the above.
>
> Thank you in advance,
> Amanda
>
> Amanda Elizabeth Lemon
> Coordinator, Records and Information Management
> OGE Energy Corp.
> P. O. Box 321, MC 1203
> Oklahoma City, OK 73101-0321
> Email: [log in to unmask]<mailto:[log in to unmask]>
> Phone: (405) 553-3012
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