mORMot Open Source

Hello there,

I have some question below, for which I couldn't find answers in Google:
1. What is mORMot using for Application Server? Or is he running as service only?
2. Where can I find same examples of real production projects with using mORMot?
3. Can mORMot support MongoDB or other NoSQL DBs?
4. What is the best DB (performance, scalability) for mORMot which can be sharded/scale up?

Thank you in advance!