moving forward we recommend creating either MVC or SPA based modules as these will be much easier to port to DNN next -ive been leeping http://www.dnnsoftware.com/wiki/dnn-8... up to date and will continue to add to it as we publish new blogs/wiki entries. Obviously this means your modules are targeting DNN 8 or above. If you need to target older releases, then any approach is valid - we typically code modules that use a SPA-type approach (i.e. we use javascript, Knockout and the service framework), but others prefer other approaches such as those you've listed (Angular, Razor etc.). Note: for many modules DCC will be a valid approach, but that depends on the individual module requirements - we continue to iterate on DCC and add functionality (we're working on list types and reference types) so hopefully it will allow for a broad range of modules

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SPA (Single Page Application) is not tied to any specific technology. You can do SPA in WebForms, MVC or pure Javascript. SPA just means once the browser gets the first page, you don't do any more full page refreshes or postbacks. You refresh the parts of the page which need updates.