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Head-to-head · Document Databases

Azure DocumentDB vs Couchbase Server

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Azure DocumentDB #3 in Document Databases 9.0/10 Free plan Free plan✓ 3 of 3 features Visit DocumentDB
Couchbase Server #6 in Document Databases 8.6/10 Free plan Free plan✓ 3 of 3 features Visit Couchbase

Azure DocumentDB leads on 0 checks, Couchbase Server on 1, and 4 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreAzure DocumentDB · 9.0/10
  • Free planboth

Azure DocumentDB scores higher on our rubric for document databases: 9.0 against 8.6 out of 10; our editors rank them #3 and #6.

Couchbase Server leads on maximum document size: 20 MB versus 16 MB.

Azure DocumentDB is the better fit for mongoDB-compatible Azure deployments. Couchbase Server is the better fit for self-hosted Couchbase-compatible deployments.

  • Azure DocumentDB fits best

    MongoDB-compatible Azure deployments

  • Couchbase Server fits best

    Self-hosted Couchbase-compatible deployments

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 DocumentDB 9.0/10 Visit ↗ Couchbase Server 8.6/10 Visit ↗
At a glance
Editor score 9.0 8.6
Ranking #3 in Document Databases #6 in Document Databases
Best for MongoDB-compatible Azure deployments Self-hosted Couchbase-compatible deployments
Pricing model Free plan + paid Free plan + paid
Starting price — —
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Self-hosted Cloud, Self-hosted
Support Docs Community, Docs
Built for Small business, Mid-market, Enterprise Mid-market, Enterprise
Features Azure DocumentDB 3/3 · Couchbase Server 3/3
Managed cloud ✓ ✓
Transactions ✓ ✓
Vector search ✓ ✓
Specs
Deployment model Both Both
Document formats BSON, JSON JSON, Binary
Maximum document size 16 MB 20 MB (best)
Our review
Pros
  • 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
  • Free Community Edition for development and production use
  • SQL++, ACID transactions, search, vector indexing, and replication
  • Runs across containers, Kubernetes, VMs, and supported operating systems
Cons
  • 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
  • Community Edition clusters are limited to five nodes from Server 7.0 onward
  • Enterprise pricing varies between marketplace and subscription models
  • Broad capabilities may exceed the needs of narrow document-storage projects
Our verdict

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 →

Couchbase Server is a distributed document database for organizations building applications around JSON and binary data. It combines key-value access with SQL++ querying, ACID transactions, full-text search, vector search and indexing,…

Read the review →
  1. Azure DocumentDBDocument Databases 9.0Free plan
  2. Couchbase ServerDocument Databases 8.6Free plan

Strengths and trade-offs

  • 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

  • Couchbase Server — where it wins

    • Free Community Edition for development and production use
    • SQL++, ACID transactions, search, vector indexing, and replication
    • Runs across containers, Kubernetes, VMs, and supported operating systems

    Where it doesn't

    • Community Edition clusters are limited to five nodes from Server 7.0 onward
    • Enterprise pricing varies between marketplace and subscription models
    • Broad capabilities may exceed the needs of narrow document-storage projects

More comparisons

All document databases comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update