MongoDB vs Amazon DynamoDB: Which is Better in 2026?
Choosing between MongoDB and Amazon DynamoDB comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Bottom line: Amazon DynamoDB wins this matchup. MongoDB is our overall Managed Databases pick. MongoDB is our free Managed Databases pick. Pick MongoDB if you need a free tier to start with.
Short on time? Here's the quick answer
Based on published vendor pricing and features and on public review data, here's who should pick what:
MongoDB
Document database that made NoSQL mainstream
Best for you if:
- • You want a free tier before you commit
Amazon DynamoDB
Serverless NoSQL database with single-digit millisecond latency
Best for you if:
- • You want fully managed NoSQL
| At a Glance | MongoDB | Amazon DynamoDB |
|---|---|---|
Starts at | Free Free plan | $0.00065/WCU/hour Provisioned |
Category | Data & Databases Cloud & Infrastructure | Data & Databases Cloud & Infrastructure |
Rating | 4.6/5 G2 4.5 · Capterra 4.7 1,376 reviews | 2.9/5 G2 4.4 · Trustpilot 1.3 951 reviews |
Free plan | Yes | No |
Watch out for | Backup storage costs extra | n/a |
Choose MongoDB or Amazon DynamoDB?
Choose MongoDB if
- You want a free tier before you commit
- You want flexible schema for rapid development
- You want excellent for document-oriented data
Choose Amazon DynamoDB if
- You want fully managed NoSQL
- You want single-digit millisecond latency
In-Depth Analysis
MongoDB
Document database that made NoSQL mainstream
However, the jump to Dedicated M10 at $57/month and M30 at $389/month can become expensive for growing production workloads, especially considering the storage and RAM provided.
Watch out
Backup storage costs extra
Strengths
- Pro: Flexible schema for rapid development
- Pro: Excellent for document-oriented data
- Pro: Horizontal scaling built-in
- Pro: Atlas cloud service is user-friendly
- Pro: Good for real-time analytics
Weaknesses
- Con: Not ideal for complex relationships
- Con: Transactions less mature than SQL databases
- Con: Can be expensive at scale on Atlas
- Con: Query performance requires proper indexing
- Con: License changes caused community concerns
Key features
Amazon DynamoDB
Serverless NoSQL database with single-digit millisecond latency
DynamoDB's pricing is generally fair, especially with the generous Free Tier and the upcoming 50% price reduction in Jan 2025.
Strengths
- Pro: Fully managed NoSQL
- Pro: Single-digit millisecond latency
- Pro: Scales automatically
- Pro: Serverless option
- Pro: Global tables
Weaknesses
- Con: Pricing complex
- Con: Query limitations
- Con: No joins or complex queries
- Con: Vendor lock-in
- Con: Learning curve for data modeling
Key features
Pricing: MongoDB vs Amazon DynamoDB
| Plan | MongoDB | Amazon DynamoDB |
|---|---|---|
| Tier 1 | $0 Free (M0) | Free Tier |
| Tier 2 | $0.011/hour Flex Cluster | $1.25 /1M writes On-Demand |
| Tier 3 | $57 Dedicated M10 | $0.00065 /WCU/hour Provisioned |
| Tier 4 | $389 Dedicated M30 | N/A |
| Tier 5 | Custom Enterprise | N/A |
Pricing verified from each vendor's public pricing page. Compare in detail on MongoDB pricing and Amazon DynamoDB pricing.
Key Takeaways
Amazon DynamoDB
- Our pick for this comparison
MongoDB
- Has a free tier
- Higher user rating: 4.6/5 vs 2.9/5
- Larger review base (1,376 reviews)
The Bottom Line
Amazon DynamoDB wins this matchup. MongoDB is our overall Managed Databases pick. MongoDB is our free Managed Databases pick. MongoDB has a free tier if you want to test without paying.
Frequently Asked Questions
Is MongoDB or Amazon DynamoDB better in 2026?
Amazon DynamoDB wins this matchup. MongoDB is our overall Managed Databases pick. MongoDB is our free Managed Databases pick. Pick MongoDB for data & databases workflows (main strength: flexible schema for rapid development). Pick Amazon DynamoDB for data & databases workflows (main strength: fully managed NoSQL).
What are MongoDB and Amazon DynamoDB used for?
MongoDB: Document database that made NoSQL mainstream. Amazon DynamoDB: Serverless NoSQL database with single-digit millisecond latency.
What does MongoDB cost vs Amazon DynamoDB?
MongoDB's paid plans start at Free (Flex Cluster). Amazon DynamoDB's paid plans start at $0.00065/WCU/hour (Provisioned).
What's the main difference between MongoDB and Amazon DynamoDB?
MongoDB's main strength: flexible schema for rapid development. Amazon DynamoDB's main strength: fully managed NoSQL.