Hi @Christiaan Boer
As mentioned above, kindly note that currently Microsoft Q&A forum only supports posting in English.
If possible please edit the question into English so we can better understand it.
Thanks for your understanding.
According to the result of machine translation, I suppose your question is:
"We as a small business have recently started a pilot of a few teams in the Teams.
I am the owner of these pilot teams, but should I drop out for any reason.
Is there any way to transfer ownership to another participant or perhaps the administrator of our M365 environment?"
If I misunderstood it, please feel free to correct me.
To answer your questions,
I am the owner of these pilot teams, but should I drop out for any reason.
It may depend on the requirement or compliance policy of your company.
By default a Teams owner would have access to the resource within the team (for example, files and conversations within the team channels) and is able to manage the team (add/remove members from the team, create channels).
If there is a requirement that you cannot have access to these, you may need to make the responsible person the owner of the team and then remove yourself from the team.
Is there any way to transfer ownership to another participant or perhaps the administrator of our M365 environment?
You can add others as an owner of the team if you are owner of the team.
Here is a link which discusses about this topic: Add members to a team in Teams
In short, when you add members to the team, you can either add them as owner (can manage team) or as member.
Here is also another link about changing a current member to an owner: Make someone a team owner
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