Azure Cosmos DB for NoSQL vs Azure DocumentDB

Azure Cosmos DB for NoSQL9.2Visit Azure DocumentDB9.0Visit

Higher score Azure Cosmos DB for NoSQL #2 in Document Databases 9.2/10 Free plan · 30-day trial Free planFree trial✓ 3 of 3 features Visit site

vs

Azure DocumentDB #3 in Document Databases 9.0/10 Free plan Free plan✓ 3 of 3 features Visit DocumentDB

• Azure Cosmos DB for NoSQL fits best

  Azure-native globally distributed applications

• Azure DocumentDB fits best

  MongoDB-compatible Azure deployments

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Side by side

Feature	Azure Cosmos DB for NoSQL 9.2/10 Visit ↗	Azure DocumentDB 9.0/10 Visit ↗
At a glance
Editor score	9.2	9.0
Ranking	#2 in Document Databases	#3 in Document Databases
Best for	Azure-native globally distributed applications	MongoDB-compatible Azure deployments
Pricing model	Free plan + paid	Free plan + paid
Starting price	—	—
Free plan	✓	✓
Free trial	30 days	—
Deployment	Cloud	Cloud, Self-hosted
Platforms	Web	Windows, macOS, Linux
Support	Docs	Docs
Built for	Small business, Mid-market, Enterprise	Small business, Mid-market, Enterprise
Features Azure Cosmos DB for NoSQL 3/3 · Azure DocumentDB 3/3
Managed cloud	✓	✓
Transactions	✓	✓
Vector search	✓	✓
Specs
Deployment model	Cloud	Both
Document formats	JSON	BSON, JSON
Maximum document size	2 MB	16 MB (best)
Our review
Pros	Global distribution with multi-region replication Free tier plus a 30-day trial Vector search, change feeds, and Azure integrations	Free tier includes 32 GB storage for the life of the Azure account Supports MongoDB tools, drivers, transactions, sharding, and scaling Combines vector, full-text, hybrid, geospatial, and compound indexing
Cons	Paid costs vary by region and configuration Transactions are limited to a logical partition Cloud-only and not open source	The managed service is centered on Azure deployment The free tier is limited to 32 GB of storage Paid tiers shown use fixed vCore and memory configurations
Our verdict	Azure Cosmos DB for NoSQL is a fully managed cloud database for applications that store and query schema-free JSON documents. It is aimed at Azure-native teams building SaaS platforms, IoT systems, real-time workloads, and AI applications.… Read the review →	Azure DocumentDB is a fully managed document database service for developers building operational NoSQL applications, real-time analytics workloads, web and mobile applications, and AI solutions. It stores BSON documents and supports the… Read the review →

Strengths and trade-offs

• Azure Cosmos DB for NoSQL — where it wins

  • Global distribution with multi-region replication
  • Free tier plus a 30-day trial
  • Vector search, change feeds, and Azure integrations

  Where it doesn't

  • Paid costs vary by region and configuration
  • Transactions are limited to a logical partition
  • Cloud-only and not open source

• Azure DocumentDB — where it wins

  • Free tier includes 32 GB storage for the life of the Azure account
  • Supports MongoDB tools, drivers, transactions, sharding, and scaling
  • Combines vector, full-text, hybrid, geospatial, and compound indexing

  Where it doesn't

  • The managed service is centered on Azure deployment
  • The free tier is limited to 32 GB of storage
  • Paid tiers shown use fixed vCore and memory configurations

• Azure Cosmos DB for NoSQL9.2/10 · Free plan · 30-day trial

  A flexible Azure-native document database with global distribution and multiple throughput models.

  Visit siteFull verdict →
• Azure DocumentDB9.0/10 · Free plan

  A feature-rich Azure document database with MongoDB compatibility and a free tier.

  Visit DocumentDBFull verdict →