Connecting to SSAS with one Active Directory Account and use roles for data preferences

Hello,I have a asp.net application which uses Active Directory for authentication, and adomd.net / C# for data access to SSAS (using MDX).The issue is, we wish to switch to a SQL Server database for authentication, but wonder the following :- is it a good practice to keep one Active Directory account using the EffectiveUserName property of the adomdconnection object, and then user only Roles to limit access to dimensions (geography dimensions for example) ?ultimately, the goal would be to use part of this application as a REST API.Thanks.