Data loss is often a major concern for Office 365 customers because Microsoft's backup policies cannot guarantee a complete and speedy restore of lost data. Even when data is retrievable, the process is long and complicated, and retention policies vary for each application included in the cloud platform.
Microsoft Office 365 business data is at risk of incidents such as:
Applications like OneDrive and SharePoint power much of the collaboration capabilities within Office 365. However, that collaboration can be put in jeopardy when user error, hacking, sync issues, or malicious insiders cause data loss. Both apps leverage a primary and secondary recycle bin with 93-day retention periods, but these can also be emptied at any time which means that data is unretrievable.
Exchange Online also has its own retention policies. By default, deleted emails go into the Deleted Items folder. Once they are purged from this (or if a customer hard- deletes Exchange items), they are sent to a secondary Recoverable Items folder, which has a 14-day default retention period (can be extended to 30 days). And while this may sound like the answer to all your backup and retention hopes and dreams, consider this:
Back up Exchange Online, SharePoint Online, OneDrive for Business, and Teams to keep business data safe from all threats.