Supabase vs Firebase vs Neon vs Upsun Cloud: Postgres integration at production scale in 2026

Supabase, Firebase, Neon, and Upsun Cloud address different production backend needs despite often being compared together: Supabase is a full backend-as-a-service built on standard PostgreSQL with bundled authentication, storage, real-time features, edge functions, connection pooling, and read replicas, but its writes remain on one vertically scaled primary instance. Firebase centers on Firestore, a NoSQL document database rather than Postgres, and stands out for automatically scaled, strongly consistent multi-region writes, although it requires document-oriented data modeling and has more limited HIPAA coverage across Firebase-branded services. Neon focuses on serverless PostgreSQL, offering autoscaling compute, scale-to-zero behavior, read replicas, copy-on-write database branches, and an optional database-backed authentication layer, while requiring customers to host applications and supporting services elsewhere. Upsun Cloud hosts applications, workers, and managed PostgreSQL or MariaDB together across several cloud providers, providing autoscaling read replicas and compliance coverage spanning the application stack, but leaving authentication, storage, and real-time functionality to application code. The appropriate choice depends chiefly on whether a team needs a bundled backend or an application hosting platform, whether its data requires relational SQL or fits a document model, and how it prioritizes write scalability, operational flexibility, and compliance scope.

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