Final answer:
The backend data store for the API BaaS depends on the specific platform or provider being used. Popular BaaS platforms like Firebase and Parse use NoSQL databases as their backend data stores.
Step-by-step explanation:
The backend data store for the API BaaS (Backend as a Service) depends on the specific platform or provider being used. Several popular BaaS platforms, such as Firebase and Parse, use NoSQL databases as their backend data stores.
For example, Firebase uses G. Cloud Firestore which is a scalable NoSQL database. Parse provides an open-source MongoDB option for storing backend data.
It's important to research the documentation and features of the specific BaaS platform you are using to determine the backend data store being utilized.