---
lang: en
title: MongoDB Atlas Cloud vs Supabase Managed Postgres
canonical: "https://saasspecs.com/mongodb-atlas-vs-supabase-db/"
hvce_version: 1
tenant: saasspecs
slug: mongodb-atlas-vs-supabase-db
record_kind: comparison
content_sha256: 7bd764b834364681d6b2e43162d04eec0ed9a0bc135c4891265803cc257ba782
indexed_at: "2026-06-15T06:32:32.875Z"
license: citation-free
entities:
  -
    role: a
    slug: mongodb-atlas
    name: MongoDB Atlas Cloud
    type: Thing
    profile_url: "https://saasspecs.com/item/mongodb-atlas/?format=md"
  -
    role: b
    slug: supabase-db
    name: Supabase Managed Postgres
    type: Thing
    profile_url: "https://saasspecs.com/item/supabase-db/?format=md"
---
# MongoDB Atlas Cloud vs Supabase Managed Postgres

## Pair

- **A**: MongoDB Atlas Cloud
- **B**: Supabase Managed Postgres

## Entity A

- **Title**: [MongoDB Atlas Cloud](https://saasspecs.com/item/mongodb-atlas/?format=md)
- **Schema type**: Corporation
- **Website**: https://www.mongodb.com
- **Email**: support@mongodb.com
- **Address**: 1633 Park Avenue, New York, New York, 10022, United States
- **Coordinates**: 40.7624, -73.9738
- **Deployment Link**: [Deploy MongoDB Atlas Cloud Stack Layer](https://www.mongodb.com/cloud/atlas/register)

### Summary

Fully managed document database with global clusters, search indexes, and flexible JSON document modeling.

### Description

MongoDB Atlas hosts replica sets and sharded clusters with automated backups, monitoring, and Data API access. Developers model evolving schemas with rich documents and aggregation pipelines without rigid relational migrations.

### Expert insight

Enable Atlas Search and compound indexes early for catalog filters before traffic scales past the M10 connection tier.

### Attributes

- **Free Tier Allowance**: 512 MB
- **Rate Limit Cap**: 100 Connections
- **Session Lifetime**: 12 Hours
- **Overage Fee per 1k MAU**: 0.25 USD/GB
- **MFA Support**: Enforced via MongoDB Cloud Organization MFA and federated identity
- **Enterprise SSO SAML**: Supported on M10+ and Enterprise with SAML, OIDC, and LDAP federation
- **Custom Domain Support**: Private endpoints via AWS PrivateLink, Azure VNet, and GCP VPC peering
- **Supported SDKs**: Node.js, Python, Java, Go, C#, Rust, PHP, Ruby, Swift, Kotlin
- **Social Providers**: Google, GitHub, and corporate SSO for Atlas organization login
- **Compliance Standards**: SOC 2 Type II, ISO 27001, HIPAA, PCI-DSS, GDPR, FedRAMP (Atlas for Government)
- **Webhook Fallback Policy**: Atlas Triggers and EventBridge integrations with configurable retry policies

## Entity B

- **Title**: [Supabase Managed Postgres](https://saasspecs.com/item/supabase-db/?format=md)
- **Schema type**: Corporation
- **Website**: https://supabase.com
- **Email**: support@supabase.io
- **Address**: 85 Harrison St, San Francisco, California, 94105, United States
- **Coordinates**: 37.7833, -122.3999
- **Deployment Link**: [Deploy Supabase Managed Postgres Stack Layer](https://supabase.com/dashboard/new/database)

### Summary

Fully managed PostgreSQL with realtime replication, row-level security, and edge-friendly connection pooling.

### Description

Supabase Database layers a production-grade Postgres cluster behind automatic backups, point-in-time recovery, and PostgREST APIs. Developers ship relational schemas with native SQL migrations and optional realtime broadcast channels.

### Expert insight

Enable connection pooling via Supavisor on port 6543 to stay within direct connection limits during serverless traffic spikes.

### Attributes

- **Free Tier Allowance**: 500 MB
- **Rate Limit Cap**: 60 Connections
- **Session Lifetime**: 24 Hours
- **Overage Fee per 1k MAU**: 0.13 USD/GB
- **MFA Support**: Enforced via Supabase dashboard and organization SSO policies
- **Enterprise SSO SAML**: Available on Team and Enterprise plans with SAML directory federation
- **Custom Domain Support**: Custom domains for API and Studio via project settings and DNS records
- **Supported SDKs**: JavaScript, TypeScript, Python, Dart, Swift, Kotlin, Go, C#
- **Social Providers**: GitHub OAuth for project provisioning; auth providers via Supabase Auth
- **Compliance Standards**: SOC 2 Type II, GDPR, HIPAA available on Enterprise agreements
- **Webhook Fallback Policy**: Database webhooks with retry via Edge Functions or external queue consumers

## Facts (machine-readable)

| axis | unit | a_value | b_value | a_display | b_display |
| --- | --- | --- | --- | --- | --- |
| Free Tier Allowance | MB | 512 | 500 | 512 MB | 500 MB |
| Rate Limit Cap | Connections | 100 | 60 | 100 Connections | 60 Connections |
| Session Lifetime | Hours | 12 | 24 | 12 Hours | 24 Hours |
| Overage Fee per 1k MAU | USD/GB | 0.25 | 0.125 | 0.25 USD/GB | 0.13 USD/GB |

## Metrics

- **Free Tier Allowance**: 512 MB / 500 MB
- **Rate Limit Cap**: 100 Connections / 60 Connections
- **Session Lifetime**: 12 Hours / 24 Hours
- **Overage Fee per 1k MAU**: 0.25 USD/GB / 0.13 USD/GB

## Comparison context

This comparison covers the following catalog entities:

- [MongoDB Atlas Cloud](https://saasspecs.com/item/mongodb-atlas/?format=md) (a)
- [Supabase Managed Postgres](https://saasspecs.com/item/supabase-db/?format=md) (b)