Microsoft enabled a new feature for Microsoft Teams: Dataverse (former Common Data Services –CDS) for Teams. It empowers Teams Owner to create PowerApps directly in Teams without any additional storage space for its data (e.g. a SharePoint List)

To achieve that every “Power App enabled Team” gets its own Power App Environment.

But there are some things to consider:

Power Platform Admins can NOT control the creation of Teams (Dataverse) Environments – the only way is to disable the Teams App “Power Apps” via Teams App Policies
The maximum number of Teams with a attached Dataverse Space is 500 – which might be a to small for large companies
Teams Environments get a 2 GB Dataverse (former CDS) Space which does not count against the overall Dataverse capacity quota – as long as you stay in the 2 GB Limt
If you need more Dataverse space - Admins will be able (in the future) to convert Teams Dataverse Environments into Production Environments – after that, the former Teams Environment Dataverse size *will* count against the overall quota and additional licenses to access the Dataverse might be needed (not included in Standard E3)
Currently this “convert” feature is not available (https://docs.microsoft.com/en-us/power-platform/admin/about-teams-environment#upgrade-process)
(It seems that Microsoft is working on additional Governance settings in the Power Platform Admin center to control the Teams Dataverse Environments creation, but it is not ready now)
The change from Teams to Production Environment will impact a license change: Teams End Users (licensed through E3) will need a Power App Premium license to access the Dataverse in the Production Environm

I would recommend:

Try to get control over the Power Platform environment creation process.
Identify the Users that have already created Teams Dataverse Environments
Inform them that their Environment will be switched into production – and they will need an additional licenses. Or they change the Data Storage option from Dataverse into e.g. SharePoint List (which is covered by E3)
Until that convert process is triggered – Force the usage of “Shared Power Apps” App in Teams via the Teams App Permission Policies – only selected “Teams App Makers”, who are instructed about possible license impacts get the “Power Apps” App via a separated Teams App Permission Policies

Stay tuned

Peter

Source: https://blog.atwork.at/post/Dataverse-for-Teams-Governance-Aspects

Dataverse for Teams–Governance Aspects