Security groups control access to OneDrive and SharePoint and are used for Mobile Device Management for Office 365. Distribution ...

Security groups control access to OneDrive and SharePoint and are used for Mobile Device Management for Office 365.

Distribution lists send email to all members of the list. You can even allow people outside your organization send email to a list.

Mail enabled security groups can be used to control access to OneDrive and SharePoint as well as to send email to all members of the list.