Teams switch for transparent pricing and built-in features. Gain: PostgreSQL (portable), real-time subscriptions, auth, storage included at $25/mo start. Trade-off: relational model vs documents, different query patterns.

Teams switch for real-time and mobile-first features. Gain: Firestore real-time sync, Authentication, Hosting all integrated. Trade-off: Google lock-in, Firestore query limitations vs MongoDB flexibility.

AWS-heavy teams switch for integration. Gain: MongoDB-compatible API, native AWS integration, no Atlas markup. Trade-off: not 100% MongoDB compatible, AWS lock-in instead of MongoDB lock-in.

Teams switch for MySQL with branching workflows. Gain: Git-like schema migrations, serverless scaling. Trade-off: no free tier (closed 2024), relational model, no vector search native.

Teams switch for serverless PostgreSQL. Gain: scale-to-zero, branching for development, PostgreSQL compatibility. Trade-off: newer platform, PostgreSQL vs document model.