GC processes and stores large amounts of data. To reduce the amount of cloud storage used, two changes have been made recently to the retention periods within Teams and Outlook:
Microsoft Teams Chats
A 30 day retention period has been added to Teams. This means all chats older than 30 days will be deleted. Please note that the chat option on Teams provides an instant messaging system – which should be used for quick messages between colleagues.
Teams shouldn't be used as an alternative to email. It shouldn't contain commercial or confidential information, personal data or documents. This retention applies to Teams Chats only and not to any other Teams applications you may be using.
Outlook
A 30 day retention period has been added to the Deleted Items folder.