Configuring site collection storage
Site collection storage quotas are less of a consideration in SharePoint Online than SharePoint Server, but there are still cases in which you may wish to limit how much storage space a site collection has. For example, even in SharePoint Online, your license limits how much storage you have available. Currently, an E1, E3, E5, or SharePoint Plan 1 or 2 license gets you 1
terabyte (TB) plus 10
gigabytes (GB) per license purchased. Read more on license-specific storage limits at https://docs.microsoft.com/en-us/office365/servicedescriptions/sharepoint-online-service-description/sharepoint-online-limits.
Some users who could be considered digital hoarders when subject to a storage limit might be less likely to upload their 100 high-resolution vacation photos. This limit can help encourage better content management and awareness (and hopefully prompt users to reconsider which files are most important to take up space in the site collection). Always...