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Head-to-head · Databases And Backend

Amazon RDS vs MongoDB Atlas

  • Updated Oct 2026
  • Both researched from official sources
  • 1 check side by side
Higher score Amazon RDS #2 in Databases And Backend 9.2/10 Paid ✓ 0 of 4 features Visit Amazon RDS
MongoDB Atlas #3 in Databases And Backend 9.1/10 Free plan Free plan✓ 0 of 4 features Visit MongoDB Atlas

Amazon RDS leads on 0 checks, MongoDB Atlas on 1, and 0 are even. Who comes out ahead on the 1 yes/no, price and count check where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreAmazon RDS · 9.2/10
  • Free planonly MongoDB Atlas

Amazon RDS scores higher on our rubric for databases and backend: 9.2 against 9.1 out of 10; our editors rank them #2 and #3.

MongoDB Atlas offers free plan; Amazon RDS doesn't.

Amazon RDS is the better fit for teams wanting managed relational databases on AWS. MongoDB Atlas is the better fit for teams building with managed MongoDB.

  • Amazon RDS fits best

    Teams wanting managed relational databases on AWS

  • MongoDB Atlas fits best

    Teams building with managed MongoDB

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Side by side

Feature Amazon RDS 9.2/10 Visit ↗ MongoDB Atlas 9.1/10 Visit ↗
At a glance
Editor score 9.2 9.1
Ranking #2 in Databases And Backend #3 in Databases And Backend
Best for Teams wanting managed relational databases on AWS Teams building with managed MongoDB
Pricing model Paid Free plan + paid
Starting price Not checked yet $8/mo
Free plan — ✓ (best)
Free trial — —
Deployment Cloud, Self-hosted Cloud
Platforms Web Web
Support Phone, Live chat, Email, Community, Docs · 24/7 Docs
Compliance SOC 2, ISO 27001, GDPR, HIPAA, PCI DSS SOC 2, ISO 27001, SSO/SAML
Integrations 8 integrations 16 integrations
Built for Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Amazon RDS 0/4 · MongoDB Atlas 0/4
Built-in auth Not checked yet Not checked yet
Realtime data sync Not checked yet Not checked yet
Serverless functions Not checked yet Not checked yet
File storage Not checked yet Not checked yet
Specs
Database model Not checked yet Not checked yet
Deployment model Not checked yet Not checked yet
API style Not checked yet Not checked yet
Our review
Pros
  • Automates provisioning, patching, backups, and recovery
  • Offers Multi-AZ deployments and read replicas
  • Integrates with CloudWatch, Secrets Manager, and other AWS services
  • Offers free, usage-based, and dedicated cluster options.
  • Supports transactions, full-text search, and vector search.
  • Automates backups and scaling across three cloud providers.
Cons
  • Usage-based pricing varies by engine, instance class, Region, and storage
  • Engine and configuration choices affect backup retention and maximum connections
  • Less suited to teams seeking a database service outside AWS
  • Free clusters have 512 MB of storage and shared compute.
  • Flex costs vary with usage and can reach $30 per month.
  • Dedicated clusters are billed hourly, so costs depend on configuration and use.
Our verdict

Amazon RDS is a managed relational database service for teams that want AWS to handle operational tasks while they choose a supported database engine. Options include PostgreSQL, MySQL, MariaDB, SQL Server, Oracle, Db2, and Aurora. It fits…

Read the review →

MongoDB Atlas is a managed cloud service for MongoDB document databases, aimed at developers and engineering teams building applications with BSON or JSON-compatible data. It hosts clusters on AWS, Google Cloud, and Azure, while automating…

Read the review →
  1. Amazon RDSDatabases And Backend 9.2Paid
  2. MongoDB AtlasDatabases And Backend 9.1Free plan

Strengths and trade-offs

  • Amazon RDS — where it wins

    • Automates provisioning, patching, backups, and recovery
    • Offers Multi-AZ deployments and read replicas
    • Integrates with CloudWatch, Secrets Manager, and other AWS services

    Where it doesn't

    • Usage-based pricing varies by engine, instance class, Region, and storage
    • Engine and configuration choices affect backup retention and maximum connections
    • Less suited to teams seeking a database service outside AWS

  • MongoDB Atlas — where it wins

    • Offers free, usage-based, and dedicated cluster options.
    • Supports transactions, full-text search, and vector search.
    • Automates backups and scaling across three cloud providers.

    Where it doesn't

    • Free clusters have 512 MB of storage and shared compute.
    • Flex costs vary with usage and can reach $30 per month.
    • Dedicated clusters are billed hourly, so costs depend on configuration and use.

More comparisons

All databases and backend comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update