O licenciamento da Microsoft exige que cada usuário tenha sua própria licença, independentemente do número de dispositivos nos quais ele ativa o software.
De acordo com os Termos do Microsoft Online Services * que incluem termos de licenciamento para aplicativos do Office 365, é necessária uma licença de assinatura ("SL de Usuário") para cada usuário :
A User SL is required for each user that accesses the Online Service unless specified otherwise in the Online Service-specific Terms.
source: Termos do Microsoft Online Services , página 4
Os "Termos específicos do serviço online" são encontrados posteriormente no documento e confirmam que usuários individuais recebem cinco ativações simultâneas de software:
Each user to whom Customer assigns a User SL must have a Microsoft Account in order to use the software provided with the subscription. These users:
- may activate the software provided with the SL on up to five concurrent OSEs for local or remote use;
- may also install the software, with shared computer activation, on a network server or Microsoft Azure Platform Services and use the software to create, edit, or save documents. For the purpose of this use right “network server” means a physical hardware server solely dedicated to Customer use. This shared computer activation provision does not apply to Customers license for Office 365 Business; and
- must connect each device upon which user has installed the software to the Internet at least once every 30 days or the functionality of the software may be affected.
source: Termos do Microsoft Online Services , página 19
* Também disponível no site Licenciamento de Produto por Volume da Microsoft