Azure Cosmos DB for NoSQL vs Amazon DocumentDB

Azure Cosmos DB for NoSQL9.1Visit Amazon DocumentDB9.1Visit

Azure Cosmos DB for NoSQL #4 in NoSQL Databases 9.1/10 Free plan · 30-day trial Free planFree trial✓ 0 of 2 features Visit Azure

vs

Amazon DocumentDB #5 in NoSQL Databases 9.1/10 30-day trial Free trial✓ 0 of 2 features Visit AWS

• Azure Cosmos DB for NoSQL fits best

  Azure teams needing globally distributed JSON storage

• Amazon DocumentDB fits best

  AWS teams running MongoDB-compatible document workloads

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature	Azure Cosmos DB for NoSQL 9.1/10 Visit ↗	Amazon DocumentDB 9.1/10 Visit ↗
At a glance
Editor score	9.1	9.1
Ranking	#4 in NoSQL Databases	#5 in NoSQL Databases
Best for	Azure teams needing globally distributed JSON storage	AWS teams running MongoDB-compatible document workloads
Pricing model	Free plan + paid	Paid
Starting price	—	—
Free plan	✓ (best)	—
Free trial	30 days	30 days
Free trial length	30 days	30 days
Deployment	Cloud	Cloud
Platforms	Web	Web
Support	Docs	Docs
Compliance	SOC 2, ISO 27001, GDPR, HIPAA, PCI DSS	SOC 2, ISO 27001, GDPR, HIPAA, PCI DSS
Built for	Small business, Mid-market, Enterprise	Mid-market, Enterprise
Features Azure Cosmos DB for NoSQL 0/2 · Amazon DocumentDB 0/2
Horizontal scaling	Not checked yet	Not checked yet
Replication	Not checked yet	Not checked yet
Specs
Data model	Not checked yet	Not checked yet
Deployment options	Not checked yet	Not checked yet
Max storage	Not checked yet	Not checked yet
Query interface	Not checked yet	Not checked yet
Our review
Pros	Automatic indexing and SQL-like queries for schema-free JSON documents ACID transactions within a logical partition, plus integrated vector search Provisioned, autoscale, and serverless throughput options	Supports MongoDB APIs and drivers, plus multi-document ACID transactions Offers serverless scaling or provisioned instances with two I/O configurations Includes global clusters, vector search, backups, and point-in-time recovery
Cons	Global distribution and throughput choices can make configuration complex Free tier is limited to one account per Azure subscription NoSQL items are limited to 2 MB	Paid service with no permanent free plan Usage-based costs vary by Region, compute, storage, I/O, and backups Focused on AWS cloud deployment rather than a multi-cloud setup
Our verdict	Azure Cosmos DB for NoSQL is a fully managed cloud document database for developers building applications around flexible JSON data. It suits Azure teams that need global distribution, low-latency access, or elastic capacity for SaaS,… Read the review →	Amazon DocumentDB is a managed cloud document database for teams running applications built around MongoDB-compatible APIs and drivers. Its JSON-style document storage and support for multi-document ACID transactions suit workloads that… Read the review →

Strengths and trade-offs

• Azure Cosmos DB for NoSQL — where it wins

  • Automatic indexing and SQL-like queries for schema-free JSON documents
  • ACID transactions within a logical partition, plus integrated vector search
  • Provisioned, autoscale, and serverless throughput options

  Where it doesn't

  • Global distribution and throughput choices can make configuration complex
  • Free tier is limited to one account per Azure subscription
  • NoSQL items are limited to 2 MB

• Amazon DocumentDB — where it wins

  • Supports MongoDB APIs and drivers, plus multi-document ACID transactions
  • Offers serverless scaling or provisioned instances with two I/O configurations
  • Includes global clusters, vector search, backups, and point-in-time recovery

  Where it doesn't

  • Paid service with no permanent free plan
  • Usage-based costs vary by Region, compute, storage, I/O, and backups
  • Focused on AWS cloud deployment rather than a multi-cloud setup

• Azure Cosmos DB for NoSQL9.1/10 · Free plan · 30-day trial

  A managed Azure document database for JSON workloads that need global distribution and flexible capacity.

  Visit AzureFull verdict →
• Amazon DocumentDB9.1/10 · 30-day trial

  A managed AWS document database for teams with MongoDB-compatible workloads.

  Visit AWSFull verdict →