A recent session at the Microsoft 365 conference offered some insight about the growth of SharePoint Online in both storage and sites. Adding 100 petabytes of storage monthly is a lot of data, but about a third of it could be consumed by Teams meeting recordings. And the 8 million sites created each month is large, but maybe not so big when you consider the reasons why Microsoft 365 tenants create sites. Teams, including private and shared channels, drives a lot of the growth in sites.
https://office365itpros.com/2022/05/16/sharepoint-online-growth/
