Have you ever thought it was cumbersome to set the storage quota for each and every site collection you create in SharePoint Online? Now you can avoid it all together by enabling automatic site collection storage management. By doing so, all of your site collections will use as much storage as it needs pulling from the total storage available.
To enable this feature
- Log into your SharePoint Online admin page.
- Click on Settings.
- Select Automatic for the Site Collection Storage Management option.
Is the feature enabled by default?
For new SharePoint Online tenants, this feature will be set to auto by default. For all existing tenants, it will be set to Manual and your admin will need to opt-in to the change.
For more information, check out Microsoft's post.