Business Essentials and Premium are closer to the Enterprise Service Family then previous Small and MidSize Service Family, and by that we mean the possibility to mix Standalone Plans is available for Business Essentials and Premium Service Family aswell. Not only reserved for Enterprise Service Family.
Technet Office 365 Plan Options gives us an overview of which Standalone Plans we have in Office 365, and these can be mixed wall Service Families.
This can be very welcoming for an individual approach to features earlier only reserved for Enterprise Service Family, and I wanne point out Azure Rights Management and Azure Active Directory Basic/Premium, which will be available for Open Licensed customers packaged with Microsoft/Windows Intune in December.
Also known as the Enterprise Mobility Suite.
Thank you Microsoft for keep bringing Enterprise Software to all business segments. Features like Message Encryption is important for Business Essentials and Premium aswell.