When you message a person or group in Google Chat, you can choose to save your conversation or have it automatically deleted after 24 hours. Read this Google Support article for more details.

• Users can turn on chat history for specific conversations.
• Messages are saved until deleted or affected by retention policies.

Google Vault can preserve messages beyond the default retention if required for legal reasons such as lawsuits or investigations.

Messages under a litigation hold cannot be deleted.

24 hours (per DIT policy).

• Users can delete their own messages from chat conversations.
• Admins set retention policies.
• Deleted messages may still be retained if retention policies or legal holds apply.

DIT does not have the necessary software license to use tools to place Teams messages on a legal hold. 

14 days (per DIT policy).

• Users cannot change the retention duration.
• Retention periods are configured by admins in Webex Control Hub.
• Webex chat is used primarily by IT groups, with plans to phase it out in the future.

DIT does not have the necessary software license to use tools to place WebEx Chat messages on a legal hold.

0 days

NOTE: Zoom Team chat is disabled and no longer available for use.

• Users cannot change the retention duration.
  
  NOTE: Zoom Team chat is disabled and no longer available for use.

DIT does not have the ability to place Zoom chat messages on a legal hold.

NOTE: Zoom Team chat is disabled and no longer available for use.