Backend: backend as a service like Firebase or Horizon/Rethinkdb. Vendor lock-in is a big concern here but you can get your prototype done so fast with those tools.
Using BaaS things is more like for the prototype/MVP like projects in my opinion.
Edited: though I see title has "basic" word in it, so it's fine.
Backend: backend as a service like Firebase or Horizon/Rethinkdb. Vendor lock-in is a big concern here but you can get your prototype done so fast with those tools.