Amazon Keyspaces vs Microsoft Azure Cosmos DB comparison

Amazon Web Services (AWS) and Microsoft are both solutions in the Managed NoSQL Databases category. Amazon Web Services (AWS) is ranked #12, while Microsoft is ranked #1 with an average rating of 8.2. Amazon Web Services (AWS) holds a 6.5% mindshare in MND, compared to Microsoft’s 16.3% mindshare. Additionally, 95% of Microsoft users are willing to recommend the solution.

Amazon Keyspaces

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Microsoft Azure Cosmos DB

Read 102 Microsoft Azure Cosmos DB reviews

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3,102 Comparison Views

95% willing to recommend

Amazon Keyspaces

Microsoft Azure Cosmos DB

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Executive SummaryUpdated on Jul 13, 2025

Microsoft Azure Cosmos DB and Amazon Keyspaces are in the scalable multi-model NoSQL database services category. Azure Cosmos DB is often favored for its global distribution capacities, whereas Amazon Keyspaces is attractive to businesses within AWS ecosystems due to its integration and Cassandra API compatibility.

Features: Microsoft Azure Cosmos DB supports multi-model databases, integrates with SQL, MongoDB, Cassandra, Tables, and Gremlin APIs, and offers automatic multi-region data distribution. Amazon Keyspaces enables developers to utilize the Cassandra API, and integrates with AWS's comprehensive security and management tools.

Ease of Deployment and Customer Service: Azure Cosmos DB simplifies deployment with its global multi-region capacities and flexible configuration for seamless scaling. Conversely, Amazon Keyspaces provides efficient deployment for businesses using AWS, due to its integration within AWS services. Both provide strong customer support, with Azure having a more established global service infrastructure.

Pricing and ROI: Microsoft Azure Cosmos DB may incur higher costs due to its global distribution features and dedicated throughput. However, it delivers substantial ROI in scenarios where high availability and low latency are vital. Amazon Keyspaces, suited for Cassandra workloads in AWS, uses a pay-as-you-go model, offering a satisfactory ROI for companies leveraging AWS advantages.

To learn more, read our detailed Managed NoSQL Databases Report (Updated: September 2025).

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Managed NoSQL Databases

September 2025

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Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Categories and Ranking

Amazon Keyspaces

Ranking in Managed NoSQL Databases

12th

Average Rating

0.0

Number of Reviews

Ranking in other categories

No ranking in other categories

Microsoft Azure Cosmos DB

Ranking in Managed NoSQL Databases

1st

Average Rating

8.2

Reviews Sentiment

7.0

Number of Reviews

102

Ranking in other categories

Database as a Service (DBaaS) (5th), NoSQL Databases (2nd), Vector Databases (1st)

Mindshare comparison

As of September 2025, in the Managed NoSQL Databases category, the mindshare of Amazon Keyspaces is 6.5%, up from 2.1% compared to the previous year. The mindshare of Microsoft Azure Cosmos DB is 16.3%, down from 17.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Managed NoSQL Databases Market Share Distribution
Product	Market Share (%)
Microsoft Azure Cosmos DB	16.3%
Amazon Keyspaces	6.5%
Other	77.2%

Managed NoSQL Databases

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MichaelJohn

Director | Data & AI at a tech services company with 11-50 employees

Very efficient for application-facing scenarios

There are several areas for improvement. Firstly, having a local development emulator or simulator for Azure Cosmos DB would be beneficial. It would be very handy to have a Docker container that developers can use locally. Although, I know there is a free tier and so on and so forth, having a local environment would be nice. For example, SQL Server is very portable. You can even install it on your machine. That is the number one thing that is missing in Azure Cosmos DB. The second improvement area is the IDE of choice. That means how you interact with Azure Cosmos DB. For example, with SQL Server, you have SQL Server Management Studio. I know there is a little bit of support for Azure Cosmos DB in Azure Data Studio, but it is not heavily advertised or it does not feel like first-class citizen support. Developer experience or developer tooling is missing in terms of interacting with the database. Better developer tools or an IDE for interacting with Azure Cosmos DB would enhance the developer experience. Lastly, there is some mixed messaging about what Azure Cosmos DB is, given its multiple APIs. There are so many Azure Cosmos DB APIs available. There is NoSQL. There are MongoDB, Gremlin, and others. There is still some mixed messaging for others who are new to Azure Cosmos DB about what Azure Cosmos DB is. Is this like MongoDB, but then there is also MongoDB in Azure Cosmos DB? I know it well, and I know that the default one is just NoSQL, but others I have interacted with over the last ten years or so get confused.

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Top Industries

By visitors reading reviews

No data available

Legal Firm

13%

Financial Services Firm

10%

Comms Service Provider

10%

Computer Software Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

No data available

By reviewers
Company Size	Count
Small Business	31
Midsize Enterprise	19
Large Enterprise	55

Questions from the Community

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What do you like most about Microsoft Azure Cosmos DB?

The initial setup is simple and straightforward. You can set up a Cosmos DB in a day, even configuring things like availability zones around the world.

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What is your experience regarding pricing and costs for Microsoft Azure Cosmos DB?

The pricing for Microsoft Azure Cosmos DB is good, but there is a developer factor to consider. It could be economical or expensive depending on usage. Guidance about query consumption of Request U...

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What needs improvement with Microsoft Azure Cosmos DB?

In terms of improvement for Microsoft Azure Cosmos DB, while it eliminates the burden of managing database infrastructure, we realized it might not be possible to use various models simultaneously ...

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Product Reports

Buyer's Guide

Managed NoSQL Databases

September 2025

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Buyer's Guide

Microsoft Azure Cosmos DB

September 2025

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Also Known As

Amazon Managed Apache Cassandra Service (MCS)

Microsoft Azure DocumentDB, MS Azure Cosmos DB

Overview

Amazon Keyspaces (for Apache Cassandra) is a scalable, highly available, and managed Apache Cassandra–compatible database service. With Amazon Keyspaces, you can run your Cassandra workloads on AWS using the same Cassandra application code and developer tools that you use today. You don’t have to provision, patch, or manage servers, and you don’t have to install, maintain, or operate software. Amazon Keyspaces is serverless, so you pay for only the resources you use and the service can automatically scale tables up and down in response to application traffic. You can build applications that serve thousands of requests per second with virtually unlimited throughput and storage. Data is encrypted by default and Amazon Keyspaces enables you to back up your table data continuously using point-in-time recovery. Amazon Keyspaces gives you the performance, elasticity, and enterprise features you need to operate business-critical Cassandra workloads at scale.

Amazon Web Services (AWS)

Microsoft Azure Cosmos DB is a globally distributed, multi-model database service providing scalability, user-friendliness, and seamless integration, suitable for managing large volumes of structured and unstructured data across diverse applications.

Azure Cosmos DB is renowned for its scalability, stability, and ease of integration, offering robust support for multiple data models and APIs. Its capacity for handling unstructured data efficiently and providing real-time analytics makes it ideal for applications requiring high performance and global distribution. With features like automatic failover and integration with Microsoft products, users benefit from cost optimization and secure data handling. Enhancement opportunities include simplifying queries, improving documentation, and expanding backup and analytics functionalities.

What are the most important features of Microsoft Azure Cosmos DB?

Scalability and Autoscaling: Efficiently handles growing data and user demands.
Multi-Model Support: Adapts to different data models seamlessly.
Global Distribution: Provides low-latency access across multiple regions.
Automatic Failover: Ensures high availability and reliability.
Integration with Microsoft Products: Offers seamless connectivity with Azure services.

What benefits should users look for in Microsoft Azure Cosmos DB reviews?

Performance and Speed: Exceptionally fast processing for real-time data analytics.
Cost Optimization: Tools for managing expenses effectively.
Secure Data Handling: Implements strong data security measures.
Flexible Data Ingestion: Supports diverse data ingestion methods.

Azure Cosmos DB is frequently used in sectors like web, mobile, IoT, and analytics. It supports applications as a key-value store, processes real-time data, and enables global scalability with low-latency access. Its big data management capabilities and integration with Azure services enhance its utility across industries.

Microsoft

Sample Customers

Expedia, Intuit, Royal Dutch Shell, Brooks Brothers

TomTom, KPMG Australia, Bosch, ASOS, Mercedes Benz, NBA, Zero Friction, Nederlandse Spoorwegen, Kinectify

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