Firebase
Document backend-as-a-serviceManaged service
Google's app platform: Firestore document database, auth, hosting, cloud functions, analytics, and push messaging. Strong realtime sync and offline support on mobile.
Official siteReach for it when
- Realtime chat and collaborative apps
- Mobile apps
- Rapid prototypes
Worth knowing
Proprietary and tied to Google Cloud; relational queries and migrations are harder than in SQL.