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Head-to-head · Document Databases

Azure DocumentDB vs Couchbase Capella

  • 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 Capella #5 in Document Databases 8.8/10 Free plan Free plan✓ 3 of 3 features Visit Couchbase

Azure DocumentDB leads on 0 checks, Couchbase Capella 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 8.8 out of 10; our editors rank them #3 and #5.

On deployment model, Azure DocumentDB gives you Both where Couchbase Capella offers Cloud. Couchbase Capella leads on maximum document size: 20 MB versus 16 MB.

Azure DocumentDB is the better fit for mongoDB-compatible Azure deployments. Couchbase Capella is the better fit for managed JSON and key-value workloads.

  • Azure DocumentDB fits best

    MongoDB-compatible Azure deployments

  • Couchbase Capella fits best

    Managed JSON and key-value workloads

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Side by side

Feature Azure DocumentDB 9.0/10 Visit ↗ Couchbase Capella 8.8/10 Visit ↗
At a glance
Editor score 9.0 8.8
Ranking #3 in Document Databases #5 in Document Databases
Best for MongoDB-compatible Azure deployments Managed JSON and key-value workloads
Pricing model Free plan + paid Free plan + paid
Starting price — $0.15/unit usage-based
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Self-hosted Cloud
Platforms Windows, macOS, Linux Web
Support Docs Community, Tickets, Docs · 24/7
Integrations 6 integrations 10 integrations
Built for Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Azure DocumentDB 3/3 · Couchbase Capella 3/3
Managed cloud ✓ ✓
Transactions ✓ ✓
Vector search ✓ ✓
Specs
Deployment model Both Cloud
Document formats BSON, JSON JSON, Binary, CSV, TSV, JSONL
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 tier includes SQL++, search, RBAC, and 8 GB
  • Paid plans add backups, vector search, Analytics, and Eventing
  • App Services supports mobile and IoT synchronization
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
  • Paid pricing varies by provider, region, node size, and data transfer
  • Free tier is limited to one node and 8 GB
  • Advanced support and uptime commitments require paid tiers
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 Capella is a fully managed, multicloud NoSQL database service for teams building and operating modern applications. It stores JSON documents, supports key-value access and SQL++ querying, and adds search, indexing, ACID…

Read the review →
  1. Azure DocumentDBDocument Databases 9.0Free plan
  2. Couchbase CapellaDocument Databases 8.8Free 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 Capella — where it wins

    • Free tier includes SQL++, search, RBAC, and 8 GB
    • Paid plans add backups, vector search, Analytics, and Eventing
    • App Services supports mobile and IoT synchronization

    Where it doesn't

    • Paid pricing varies by provider, region, node size, and data transfer
    • Free tier is limited to one node and 8 GB
    • Advanced support and uptime commitments require paid tiers

More comparisons

All document databases comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update