DotNetNuke 的构架允许使应用层被建立分布在两个服务上：web服务和数据服务，web服务包括表现层，业务逻辑层和数据获取层，数据服务包括数据层。详细情况看图：
Architectural Overview
The DotNetNuke architecture permits the application tiers to be distributed across two servers: the web
server and the database server, The web server contains the presentation, business
logic, and data access layers. The database server contains the data layer.
