When a global or SharePoint admin in Office 365 deletes a site, it is moved to the site collection Recycle Bin and retained for 93 days. After 93 days, sites and their content and settings are permanently deleted, including:
Attention global and SharePoint admins in Office 365, this blog post can help you control user access to SharePoint and OneDrive data on un-managed devices. Idle session sign-out is an excellent feature that can be used with SharePoint and OneDrive to achieve optimum user productivity while ensuring data security irrespective of the user's location, device type or how secure their network connection is.
This blog post is for organizations that need to work with user profile settings and it describes the common tasks.