MongoDB Atlas vs Amazon DocumentDB

MongoDB Atlas9.4Visit Amazon DocumentDB8.3Visit

Higher score MongoDB Atlas #1 in Document Databases 9.4/10 Free plan Free plan✓ 3 of 3 features Visit MongoDB Atlas

vs

Amazon DocumentDB #9 in Document Databases 8.3/10 30-day trial Free trial✓ 3 of 3 features Visit DocumentDB

• MongoDB Atlas fits best

  Managed, production-grade multi-cloud databases

• Amazon DocumentDB fits best

  AWS-native managed MongoDB-compatible workloads

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Side by side

Feature	MongoDB Atlas 9.4/10 Visit ↗	Amazon DocumentDB 8.3/10 Visit ↗
At a glance
Editor score	9.4	8.3
Ranking	#1 in Document Databases	#9 in Document Databases
Best for	Managed, production-grade multi-cloud databases	AWS-native managed MongoDB-compatible workloads
Pricing model	Free plan + paid	Paid
Starting price	$8/mo	—
Free plan	✓ (best)	—
Free trial	—	30 days
Deployment	Cloud	Cloud
Platforms	Web	Web
Support	Docs	Docs
Compliance	SOC 2, ISO 27001, SSO/SAML	SOC 2, ISO 27001, GDPR, HIPAA, PCI DSS
Integrations	16 integrations	7 integrations
Built for	Small business, Mid-market, Enterprise	Mid-market, Enterprise
Features MongoDB Atlas 3/3 · Amazon DocumentDB 3/3
Managed cloud	✓	✓
Transactions	✓	✓
Vector search	✓	✓
Specs
Deployment model	Cloud	Cloud
Document formats	BSON, JSON	JSON, BSON
Maximum document size	16 MB	16 MB
Our review
Pros	Multi-cloud and multi-region deployment options Built-in transactions, search, and vector search Managed scaling, backups, monitoring, and restores	MongoDB API, driver, and tooling compatibility Serverless scaling, provisioned instances, and automatic storage scaling Multi-AZ replication, backups, transactions, and vector search
Cons	Pricing varies by provider, region, and configuration Flex uses shared RAM and vCPU Dedicated plans start at $0.08 per hour	Usage-based billing requires careful cost modeling Cloud deployment limits it to AWS-managed environments No open-source deployment option
Our verdict	MongoDB Atlas is a fully managed cloud database service for developers and engineering teams building applications with MongoDB’s BSON document model. It hosts database clusters on Amazon Web Services, Google Cloud, and Microsoft Azure,… Read the review →	Amazon DocumentDB is a fully managed cloud document database from AWS for applications built around MongoDB-compatible APIs, drivers, and tools. It supports JSON documents and workloads including content management, e-commerce, mobile and… Read the review →

Strengths and trade-offs

• MongoDB Atlas — where it wins

  • Multi-cloud and multi-region deployment options
  • Built-in transactions, search, and vector search
  • Managed scaling, backups, monitoring, and restores

  Where it doesn't

  • Pricing varies by provider, region, and configuration
  • Flex uses shared RAM and vCPU
  • Dedicated plans start at $0.08 per hour

• Amazon DocumentDB — where it wins

  • MongoDB API, driver, and tooling compatibility
  • Serverless scaling, provisioned instances, and automatic storage scaling
  • Multi-AZ replication, backups, transactions, and vector search

  Where it doesn't

  • Usage-based billing requires careful cost modeling
  • Cloud deployment limits it to AWS-managed environments
  • No open-source deployment option

• MongoDB Atlas9.4/10 · Free plan

  A managed MongoDB platform for production applications across cloud providers and regions.

  Visit MongoDB AtlasFull verdict →
• Amazon DocumentDB8.3/10 · 30-day trial

  A capable AWS-managed MongoDB-compatible database for production cloud workloads.

  Visit DocumentDBFull verdict →