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Head-to-head · Key-Value Databases

Amazon DynamoDB vs FoundationDB

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score Amazon DynamoDB #1 in Key-Value Databases 9.3/10 Free plan Free plan✓ 2 of 3 features Try Amazon DynamoDB
FoundationDB #4 in Key-Value Databases 8.9/10 Open source ✓ 2 of 3 features Visit FoundationDB

Amazon DynamoDB leads on 0 checks, FoundationDB on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreAmazon DynamoDB · 9.3/10
  • Free planonly Amazon DynamoDB

Amazon DynamoDB scores higher on our rubric for key-value databases: 9.3 against 8.9 out of 10; our editors rank them #1 and #4.

On deployment model, FoundationDB gives you Self_hosted where Amazon DynamoDB offers Cloud. On persistence modes, FoundationDB gives you Both where Amazon DynamoDB offers Disk.

Amazon DynamoDB is the better fit for managed, scalable AWS key-value workloads. FoundationDB is the better fit for developers needing strict transactional key-value storage.

  • Amazon DynamoDB fits best

    Managed, scalable AWS key-value workloads

  • FoundationDB fits best

    Developers needing strict transactional key-value storage

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Side by side

Feature Amazon DynamoDB 9.3/10 Visit ↗ FoundationDB 8.9/10 Visit ↗
At a glance
Editor score 9.3 8.9
Ranking #1 in Key-Value Databases #4 in Key-Value Databases
Best for Managed, scalable AWS key-value workloads Developers needing strict transactional key-value storage
Pricing model Free plan + paid Free
Starting price — Open source
Free plan ✓ (best) Not checked yet
Free trial — —
Deployment Cloud Self-hosted, Cloud
Platforms Web, Windows, macOS, Linux, iOS, Android Windows, macOS, Linux
Support Docs Community, Docs
Built for Small business, Mid-market, Enterprise Mid-market, Enterprise
Features Amazon DynamoDB 2/3 · FoundationDB 2/3
TTL support ✓ (best) Not checked yet
Clustering support Not checked yet ✓ (best)
Multi-region support ✓ ✓
Specs
Deployment model Cloud Self_hosted
Maximum value size 0.4 MB Not checked yet
Persistence modes Disk Both
Supported protocols HTTP(S), JSON, PartiQL C API, Go API, Python API, Ruby API, Java API, Node.js API
Our review
Pros
  • Supports key-value and document data models with automatic scaling
  • Offers multi-Region global tables, transactions, recovery, and backups
  • Connects with Lambda, S3, Kinesis Data Streams, Athena, and SageMaker
  • Strict-serializable multi-key ACID transactions
  • Ordered range reads with lexicographic key selectors
  • Geographic replication, failover, and automatic repartitioning
Cons
  • Usage-based billing may be less predictable than fixed paid plans
  • Cloud deployment and AWS service integration may limit portability
  • Items have a documented maximum size of 400 KB
  • Self-hosted deployment requires cluster administration
  • Maximum documented value size is 100 kB
  • Core access centers on a lower-level key-value API
Our verdict

Amazon DynamoDB is a serverless, fully managed NoSQL database for applications built around key-value or document data models. It is intended for operational workloads such as user profiles, shopping carts, session stores, gaming data, and…

Read the review →

FoundationDB is an open-source distributed database for applications that need an ordered binary key-value model and strongly consistent transactions. It suits developers building services that require multi-key ACID operations, strict…

Read the review →
  1. Amazon DynamoDBKey-Value Databases 9.3Free plan
  2. FoundationDBKey-Value Databases 8.9Open source

Strengths and trade-offs

  • Amazon DynamoDB — where it wins

    • Supports key-value and document data models with automatic scaling
    • Offers multi-Region global tables, transactions, recovery, and backups
    • Connects with Lambda, S3, Kinesis Data Streams, Athena, and SageMaker

    Where it doesn't

    • Usage-based billing may be less predictable than fixed paid plans
    • Cloud deployment and AWS service integration may limit portability
    • Items have a documented maximum size of 400 KB

  • FoundationDB — where it wins

    • Strict-serializable multi-key ACID transactions
    • Ordered range reads with lexicographic key selectors
    • Geographic replication, failover, and automatic repartitioning

    Where it doesn't

    • Self-hosted deployment requires cluster administration
    • Maximum documented value size is 100 kB
    • Core access centers on a lower-level key-value API

More comparisons

All Key-Value databases comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update