I have an MVC front end application (relatively small) with its own DAL implementation using repository pattern. I am thinking of moving the DAL in its own WebAPI project to maintain cleaner separation. The MVC app is hosted in Azure using a cloud service (web role). The WebAPI will only be used by the front end application and would not be exposed to any other external application for now, but even then i would still want it to be hosted as a separate app/web/worker role rather than keeping the DAL in same project.
Would it be a good idea to:
1) Host the WebAPI project within the same Cloud Service as a Web/Worker role or should I create a new website/cloud service for hosting it? Using the same cloud service is preferred keeping the cost factor and n/w latency issues in mind.
2) If I host in same cloud service, what is more advisable to use for web api project - web or worker role?
3) Somewhere i read that I should make use of Service Bus in Azure for interaction between MVC frontend and WebAPI backend. Is this the suggested way of doing it or is there any simpler way of getting it done?