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Microsoft Azure Cosmos DB vs Microsoft Azure DocumentDB comparison

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Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

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

ROI

Sentiment score
6.1
Microsoft Azure Cosmos DB offers significant cost savings and efficiency through scalability and a pay-as-you-go model.
Sentiment score
4.8
Microsoft Azure DocumentDB improves efficiency with cost savings, reduced manual maintenance, and seamless integration, enhancing daily task management.
Getting an MVP of that project would have taken six to eight months, but because we had an active choice of using Azure Cosmos DB and other related cloud-native services of Azure, we were able to get to an MVP stage in a matter of weeks, which is six weeks.
Director | Data & AI at a tech services company with 11-50 employees
You can react quickly and trim down the specs, memory, RAM, storage size, etc. It can save about 20% of the costs.
Co-Founder at arpa
When I have done comparisons or cost calculations, I have sometimes personally seen as much as 25% to 30% savings.
Solutions Architect at CompuNet
I estimate we have saved the team around 15 hours per month by reducing manual effort related to database maintenance, scaling, and infrastructure management.
Infrastructure Engineer at a consultancy with 1-10 employees
Even quite good local environmental support and microservices-based capabilities are available, which have increased rapid development, meaning I think it is time-saving and money-saving.
Technical Architect at a wholesaler/distributor with 1,001-5,000 employees
I have seen a return on investment with Microsoft Azure DocumentDB, specifically a 30% saving in database costs.
Cloud architect at a tech vendor with 10,001+ employees
 

Customer Service

Sentiment score
6.7
Microsoft Azure Cosmos DB's support is praised for responsiveness but may require efforts to reach specialists for complex issues.
Sentiment score
5.0
Microsoft Azure DocumentDB support is largely trusted and satisfactory, with high ratings but occasional resolution delays reported.
Premier Support has deteriorated compared to what it used to be, especially for small to medium-sized customers like ours.
Head of IT, Infrastructure, Operations & Applications Development at a manufacturing company with 201-500 employees
I would rate the technical support for Microsoft Azure Cosmos DB around 9.5 on a scale of one to ten.
Technical Manager at Infosys
The response was quick.
Lead Cloud Architect at Solliance, Inc
I have not had issues regarding the SLAs that we would have agreed on and the response time.
Director for Gross and Transformation at primproa
Microsoft is a very professional organization.
Senior Project Manager at Happiest Minds
Customer support for Microsoft Azure DocumentDB is pretty good; that is what I want to see regarding Microsoft Azure SLA and other aspects.
Technical Architect at a wholesaler/distributor with 1,001-5,000 employees
 

Scalability Issues

Sentiment score
7.6
Microsoft Azure Cosmos DB offers flexible, efficient, and scalable data management, adapting to traffic demands while maintaining performance.
Sentiment score
5.7
Microsoft Azure DocumentDB provides elastic scalability, ensuring data availability and performance under variable traffic but may incur high costs.
The system scales up capacity when needed and scales down when not in use, preventing unnecessary expenses.
Associate Software Architect at a tech vendor with 51-200 employees
We like that it can auto-scale to demand, ensuring we only pay for what we use.
CTO at Stellium Consulting
We have had no issues with its ability to search through large amounts of data.
Full Stack Software Developer at a tech vendor with 10,001+ employees
The elastic scaling feature in Microsoft Azure DocumentDB has helped manage business growth for two customers who have employed it, and they found a dramatic rise in improvement.
Cloud Advisor at Digital Cognitive Consultancy Services LLP
Regarding Microsoft Azure DocumentDB's elastic scaling feature, when you do projections of where you sit as a business, especially in financial services, it really helps us to plan for customer growth and transaction growth as well.
Director for Gross and Transformation at primproa
You can always increase or decrease the computing resources based on the workload demand.
Senior Project Manager at Happiest Minds
 

Stability Issues

Sentiment score
7.6
Microsoft Azure Cosmos DB is highly reliable with 99.9% uptime, strong stability ratings, and effective cross-region synchronization.
Sentiment score
7.3
Opinions on Microsoft Azure DocumentDB's stability vary, with some citing reliability and others reporting issues with the service and SDK.
We have multiple availability zones, so nothing goes down.
Hands on user at a manufacturing company with 10,001+ employees
Azure Cosmos DB would be a good choice if you have to deploy your application in a limited time frame and you want to auto-scale the database across different applications.
Associate Data Analytics L1 at a computer software company with 10,001+ employees
I would rate it a ten out of ten in terms of availability and latency.
Azure Consultant at Deloitte
The solution is still okay; it is still fine, indicating that it is stable and reliable.
Director for Gross and Transformation at primproa
So far, I have not seen any issues with Microsoft Azure DocumentDB.
Cloud Advisor at Digital Cognitive Consultancy Services LLP
 

Room For Improvement

Users seek improvements in Azure Cosmos DB's pricing, cross-container joins, UI, documentation, data migration, analytics, and query efficiency.
Microsoft Azure DocumentDB needs better pricing, integration, analytics, documentation, deployment support, community maturity, diagnostics, and advanced features.
We must ensure data security remains the top priority.
Cloud Solutions Architect and Microsoft Principal Consultant for EMEA at a tech vendor with 10,001+ employees
You have to monitor the Request Units.
Co-Founder at arpa
The dashboard could include more detailed RU descriptions, IOPS, and compute metrics.
Cloud Architect at a computer software company with 1,001-5,000 employees
I would want to see more AI immersion in setup, monitoring, and support.
Director for Gross and Transformation at primproa
Microsoft should offer these products for free to startups or perhaps free for the first year or two years, so that startups can use these applications, and once they grow bigger and have larger revenue, they can purchase it at a reasonable cost.
Senior Project Manager at Happiest Minds
More detailed built-in performance diagnostics, proactive recommendations, and clearer monitoring of query performance would also be useful.
Infrastructure Engineer at a consultancy with 1-10 employees
 

Setup Cost

Microsoft Azure Cosmos DB offers a pay-as-you-go pricing model, balancing cost-effectiveness with scalability and demand-based auto-scaling.
Initially, it seemed like an expensive way to manage a NoSQL data store, but so many improvements that have been made to the platform have made it cost-effective.
Lead Cloud Architect at Solliance, Inc
Cosmos DB is expensive, and the RU-based pricing model is confusing.
IT Data Architect & Manager at Ternium Mexico S.A. de C.V.
Cosmos DB is great compared to other databases because we can reduce the cost while doing the same things.
Lead Software Architect at CPower
My experience with pricing, setup cost, and licensing for Microsoft Azure DocumentDB is that it is comparatively less than what it is for other open source offerings.
Technical Architect at a wholesaler/distributor with 1,001-5,000 employees
My experience with the pricing, implementation cost, and licensing of Microsoft Azure DocumentDB is good overall.
Cloud architect at a tech vendor with 10,001+ employees
 

Valuable Features

Microsoft Azure Cosmos DB offers scalability, low latency, multi-region support, and flexibility with multi-API support, enhancing cost effectiveness.
Microsoft Azure DocumentDB provides robust performance, scalability, and security with seamless integration, enhancing data management for diverse applications.
The most valuable feature of Microsoft Azure Cosmos DB is its real-time analytics capabilities, which allow for turnaround times in milliseconds.
Vice President, Machine Learning at a healthcare company with 10,001+ employees
Performance and security are valuable features, particularly when using Cosmos DB for MongoDB emulation and NoSQL.
IT Data Architect & Manager at Ternium Mexico S.A. de C.V.
The performance and scaling capabilities of Cosmos DB are excellent, allowing it to handle large workloads compared to other services such as Azure AI Search.
CTO at Stellium Consulting
One of the most appreciated aspects of Microsoft Azure DocumentDB is the elastic scaling feature.
Cloud Advisor at Digital Cognitive Consultancy Services LLP
Microsoft Azure DocumentDB has positively impacted my organization by allowing us to reduce database costs by 30%.
Cloud architect at a tech vendor with 10,001+ employees
The combination of flexible data modeling, scalability, availability, and Azure ecosystem integration makes Microsoft Azure DocumentDB suitable for modern application workloads.
Infrastructure Engineer at a consultancy with 1-10 employees
 

Categories and Ranking

Microsoft Azure Cosmos DB
Ranking in Database as a Service (DBaaS)
4th
Ranking in NoSQL Databases
1st
Average Rating
8.2
Reviews Sentiment
6.9
Number of Reviews
115
Ranking in other categories
Managed NoSQL Databases (1st), Vector Databases (1st)
Microsoft Azure DocumentDB
Ranking in Database as a Service (DBaaS)
14th
Ranking in NoSQL Databases
15th
Average Rating
8.6
Reviews Sentiment
5.4
Number of Reviews
7
Ranking in other categories
No ranking in other categories
 

Featured Reviews

Aman-Narang - PeerSpot reviewer
Technical Manager at Infosys
Real-time messaging has transformed customer updates and now powers responsive AI experiences
The primary benefits of Microsoft Azure Cosmos DB include horizontal scalability. The main advantage is that it handles data growth without requiring database redesign when traffic increases. Low latency access is another key benefit, as read and write operations are very fast, which is extremely helpful for real-time applications. Flexibility is also valuable because Microsoft Azure Cosmos DB uses JSON schema format, which contrasts with traditional table schemas that require time-consuming changes. In modernization scenarios where client requirements change rapidly, Microsoft Azure Cosmos DB offers more flexible schema design. High availability is another important feature, as it is well-suited for business-critical systems. My overall experience using Microsoft Azure Cosmos DB with other Azure services shows that it is more flexible compared to SQL Database and more readable because of its JSON format, making it easy to understand. It is more interactive because viewing the Microsoft Azure Cosmos DB schema clearly shows what is happening in the application and what will be achieved. In contrast, SQL requires writing many queries to obtain details, making Microsoft Azure Cosmos DB more suitable and flexible. My team's experience developing with Microsoft Azure Cosmos DB SDKs and APIs has been very comfortable and easy to implement. We are currently migrating .NET applications to Python-based AI solutions using Copilot, where we performed reverse engineering and are moving to forward engineering. We use APIs to connect with Microsoft Azure Cosmos DB and manage database containers and items, performing CRUD operations such as create, delete, and read operations, and querying JSON. We are using REST APIs with Python-based solutions, with a service layer and Microsoft Azure Cosmos DB integration.
Anish-Anand - PeerSpot reviewer
Senior Project Manager at Happiest Minds
Reporting for global banking stakeholders has become seamless and supports diverse visual formats
All Microsoft applications, whether database or analytics, are a little costlier compared to Google products, and this is a barrier that needs to be crossed so that all its applications become more affordable. For example, startups typically go for free tools. Microsoft should offer these products for free to startups or perhaps free for the first year or two years, so that startups can use these applications, and once they grow bigger and have larger revenue, they can purchase it at a reasonable cost. All Microsoft tools need to cut down on their price and have a better strategy around pricing for the masses. If you sell only to ten customers, your revenue is lesser, but if you give something for free to some customers, two years down the line they will purchase it. Microsoft Azure DocumentDB still needs the ability to connect to other analytics easily without any additional integrator. For example, if I can connect to Google Analytics or other analytics that are not Microsoft tools using this database, that would be a good source of revenue. If I have already purchased Google Analytics in my company and I need a database, and Microsoft Azure DocumentDB can very easily connect or integrate to my Google Analytics, I would not have to think twice. Cross-company application connectivity is something that needs to be worked on.
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Top Industries

By visitors reading reviews
Financial Services Firm
11%
Outsourcing Company
11%
Legal Firm
10%
Manufacturing Company
9%
No data available
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business36
Midsize Enterprise24
Large Enterprise60
By reviewers
Company SizeCount
Small Business4
Large Enterprise3
 

Questions from the Community

What is your experience regarding pricing and costs for Microsoft Azure Cosmos DB?
I have knowledge about the pricing, setup cost, and licensing aspect of Microsoft Azure Cosmos DB.
What needs improvement with Microsoft Azure Cosmos DB?
Microsoft Azure Cosmos DB could improve cost and performance management to be more straightforward, particularly for teams managing workloads with variable traffic. More detailed and proactive reco...
What is your primary use case for Microsoft Azure Cosmos DB?
My main use case for Microsoft Azure Cosmos DB is to support application workloads that require a highly scalable, low latency NoSQL database. I primarily use it to store and manage semi-structured...
What needs improvement with Microsoft Azure DocumentDB?
All Microsoft applications, whether database or analytics, are a little costlier compared to Google products, and this is a barrier that needs to be crossed so that all its applications become more...
What is your primary use case for Microsoft Azure DocumentDB?
The biggest use case for my team, as we are a BI team with six data engineering teams, was to connect to Microsoft Azure DocumentDB, get the data in the format that my team's application WebFOCUS w...
What advice do you have for others considering Microsoft Azure DocumentDB?
My application connects and talks to the database as well. Because we have a Power BI team that needs data, all of it is interconnected. We have an entire Microsoft toolset, including Jira, Azure D...
 

Also Known As

Microsoft Azure DocumentDB, MS Azure Cosmos DB
No data available
 

Overview

 

Sample Customers

TomTom, KPMG Australia, Bosch, ASOS, Mercedes Benz, NBA, Zero Friction, Nederlandse Spoorwegen, Kinectify
Information Not Available
Find out what your peers are saying about Microsoft Azure Cosmos DB vs. Microsoft Azure DocumentDB and other solutions. Updated: October 2026.
919,894 professionals have used our research since 2012.